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Organism
  Plantae
      Tracheophyta
            Magnoliopsida
                    Caryophyllales
                            Cactaceae
                                     Acanthocereus
                                             Acanthocereus tetragonus
                                                   [Acanthocereus floridanus]
                                                   [Acanthocereus pentagonus]
                                                   [Cactus tetragonus]
                                                   [Cereus pentagonus]
                                     Acanthochiton
                                     Acanthogonum
                                     Ariocarpus
                                             Ariocarpus fissuratus
                                                   [Mammillaria fissurata]
                                     Astrophytum
                                             Astrophytum asterias
                                                   [Echinocactus asterias]
                                     Bergerocactus
                                             Bergerocactus emoryi
                                                   [Bergerocereus emoryi]
                                                   [Cereus emoryi]
                                     Bergerocereus
                                     Brasiliopuntia
                                             Brasiliopuntia brasiliensis
                                                   [Cactus brasiliensis]
                                                   [Opuntia brasiliensis]
                                     Brassaia
                                     Carnegia
                                     Carnegiea
                                             Carnegiea gigantea
                                                   [Carnegia gigantea]
                                                   [Cereus giganteus]
                                     Cephalocereus
                                     Cereus
                                             Cereus hexagonus
                                             Cereus hildmannianus
                                                   [Cereus uruguayanus]
                                                   [Stenocereus peruvianus]
                                               Cereus hildmannianus subsp. uruguayanus
                                                     [Cereus uruguayanus]
                                             Cereus pectinatus
                                             Cereus peruvianus
                                             Cereus viridiflorus
                                     Cerothamnus
                                     Consolea
                                             Consolea corallicola
                                                   [Cactus spinosissimus]
                                                   [Opuntia corallicola]
                                                   [Opuntia spinosissima]
                                             Consolea moniliformis
                                                   [Opuntia moniliformis]
                                             Consolea rubescens
                                                   [Opuntia rubescens]
                                             Consolea spinosissima
                                                   [Cactus spinosissimus]
                                                   [Opuntia spinosissima]
                                     Coryphantha
                                             Coryphantha cornifera
                                             Coryphantha echinus
                                                   [Coryphantha cornifera var. echinus]
                                                   [Coryphantha pectinata]
                                                   [Mammillaria echinus]
                                             Coryphantha macromeris
                                                   [Mammillaria macromeris]
                                               Coryphantha macromeris subsp. runyonii
                                                     [Coryphantha macromeris var. runyonii]
                                                     [Coryphantha runyonii]
                                                     [Mammillaria runyonii]
                                               Coryphantha macromeris var. macromeris
                                                     [Mammillaria macromeris]
                                             Coryphantha nickelsiae
                                                   [Coryphantha sulcata var. nickelsiae]
                                                   [Mammillaria nickelsiae]
                                             Coryphantha ramillosa
                                                   [Mammillaria ramillosa]
                                             Coryphantha recurvata
                                                   [Mammillaria recurvata]
                                             Coryphantha robustispina
                                               Coryphantha robustispina subsp. robustispina
                                                     [Cactus robustispinus]
                                                     [Coryphantha scheeri var. robustispina]
                                                     [Mammillaria robustispina]
                                               Coryphantha robustispina subsp. scheeri
                                                     [Coryphantha robustispina subsp. uncinata]
                                                     [Coryphantha scheeri var. scheeri]
                                                     [Coryphantha scheeri var. uncinata]
                                                     [Coryphantha scheeri var. valida]
                                                     [Coryphantha scheeri]
                                                     [Mammillaria scheeri]
                                             Coryphantha sulcata
                                                   [Mammillaria sulcata]
                                     Cylindropuntia
                                             Cylindropuntia abysii
                                                   [Opuntia abysii]
                                             Cylindropuntia acanthocarpa
                                                   [Opuntia acanthocarpa var. acanthocarpa]
                                                   [Opuntia acanthocarpa]
                                               Cylindropuntia acanthocarpa subsp. coloradensis
                                                     [Opuntia acanthocarpa var. coloradensis]
                                               Cylindropuntia acanthocarpa subsp. major
                                                     [Opuntia acanthocarpa var. major]
                                                     [Opuntia echinocarpa var. major]
                                               Cylindropuntia acanthocarpa var. acanthocarpa
                                                     [Opuntia acanthocarpa var. acanthocarpa]
                                                     [Opuntia acanthocarpa]
                                               Cylindropuntia acanthocarpa var. coloradensis
                                                     [Opuntia acanthocarpa var. coloradensis]
                                               Cylindropuntia acanthocarpa var. major
                                                     [Opuntia acanthocarpa var. major]
                                                     [Opuntia echinocarpa var. major]
                                               Cylindropuntia acanthocarpa var. thornberi
                                                     [Opuntia acanthocarpa var. thornberi]
                                                     [Opuntia thornberi]
                                             Cylindropuntia arbuscula
                                                   [Opuntia arbuscula]
                                             Cylindropuntia bigelovii
                                                   [Opuntia bigelovii]
                                             Cylindropuntia californica
                                                   [Opuntia californica var. californica]
                                                   [Opuntia californica]
                                               Cylindropuntia californica var. californica
                                                     [Opuntia californica var. californica]
                                                     [Opuntia californica]
                                                     [Opuntia parryi var. serpentina]
                                                     [Opuntia serpentina]
                                               Cylindropuntia californica var. parkeri
                                                     [Opuntia californica var. parkeri]
                                                     [Opuntia echinocarpa var. parkeri]
                                                     [Opuntia parryi var. serpentina]
                                                     [Opuntia parryi]
                                                     [Opuntia serpentina]
                                             Cylindropuntia congesta
                                                   [Opuntia congesta]
                                             Cylindropuntia davisii
                                                   [Opuntia davisii]
                                                   [Opuntia tunicata var. davisii]
                                             Cylindropuntia deserta
                                                   [Opuntia deserta]
                                             Cylindropuntia echinocarpa
                                                   [Opuntia echinocarpa]
                                                   [Opuntia wigginsii]
                                             Cylindropuntia fosbergii
                                                   [Opuntia bigelovii var. hoffmannii]
                                             Cylindropuntia fulgida
                                                   [Opuntia fulgida var. fulgida]
                                                   [Opuntia fulgida]
                                               Cylindropuntia fulgida var. fulgida
                                                     [Opuntia fulgida var. fulgida]
                                                     [Opuntia fulgida]
                                               Cylindropuntia fulgida var. mamillata
                                                     [Opuntia fulgida var. mamillata]
                                                     [Opuntia mamillata]
                                             Cylindropuntia ganderi
                                                   [Opuntia acanthocarpa subsp. ganderi]
                                                   [Opuntia acanthocarpa var. ganderi]
                                                   [Opuntia ganderi]
                                             Cylindropuntia imbricata
                                                   [Opuntia imbricata var. imbricata]
                                                   [Opuntia imbricata]
                                               Cylindropuntia imbricata var. argentea
                                                     [Opuntia imbricata var. argentea]
                                               Cylindropuntia imbricata var. imbricata
                                                     [Cereus imbricatus]
                                                     [Opuntia arborescens]
                                                     [Opuntia imbricata var. arborescens]
                                                     [Opuntia imbricata var. imbricata]
                                                     [Opuntia imbricata var. vexans]
                                                     [Opuntia imbricata]
                                             Cylindropuntia kelvinensis
                                                   [Opuntia kelvinensis]
                                             Cylindropuntia kleiniae
                                                   [Opuntia kleiniae]
                                             Cylindropuntia leptocaulis
                                                   [Opuntia leptocaulis]
                                             Cylindropuntia multigeniculata
                                                   [Opuntia multigeniculata]
                                                   [Opuntia whipplei var. multigeniculata]
                                             Cylindropuntia munzii
                                                   [Opuntia munzii]
                                             Cylindropuntia neoarbuscula
                                                   [Opuntia neoarbuscula]
                                             Cylindropuntia prolifera
                                                   [Opuntia prolifera]
                                             Cylindropuntia ramosissima
                                                   [Opuntia ramosissima]
                                             Cylindropuntia spinosior
                                                   [Opuntia rhodantha var. spinosior]
                                                   [Opuntia spinosior]
                                                   [Opuntia whipplei var. spinosior]
                                             Cylindropuntia tetracantha
                                                   [Opuntia californica]
                                                   [Opuntia kleiniae var. tetracantha]
                                                   [Opuntia tetracantha]
                                             Cylindropuntia tunicata
                                                   [Opuntia tunicata var. tunicata]
                                                   [Opuntia tunicata]
                                             Cylindropuntia versicolor
                                                   [Opuntia versicolor]
                                             Cylindropuntia viridiflora
                                                   [Opuntia imbricata var. viridiflora]
                                                   [Opuntia viridiflora]
                                                   [Opuntia whipplei var. viridiflora]
                                             Cylindropuntia vivipara
                                                   [Opuntia vivipara]
                                             Cylindropuntia whipplei
                                                   [Opuntia whipplei]
                                             Cylindropuntia wolfii
                                                   [Opuntia echinocarpa var. wolfii]
                                                   [Opuntia wolfii]
                                     Cylindropyrum
                                     Echinocactus
                                             Echinocactus glaucus
                                             Echinocactus horizonthalonius
                                                   [Echinocactus horizonthalonius var. moelleri]
                                                   [Echinocactus horizonthalonius var. nicholii]
                                               Echinocactus horizonthalonius var. horizonthalonius
                                                     [Echinocactus horizonthalonius var. moelleri]
                                             Echinocactus polycephalus
                                               Echinocactus polycephalus subsp. xeranthemoides
                                                     [Echinocactus polycephalus var. xeranthemoides]
                                               Echinocactus polycephalus var. polycephalus
                                             Echinocactus texensis
                                                   [Homalocephala texensis]
                                             Echinocactus xeranthemoides
                                     Echinocereus
                                             Echinocereus apachensis
                                             Echinocereus arizonicus
                                                   [Echinocereus coccineus var. arizonicus]
                                                   [Echinocereus polyacanthus var. neomexicanus]
                                                   [Echinocereus triglochidiatus var. arizonicus]
                                                   [Echinocereus triglochidiatus var. neomexicanus]
                                             Echinocereus berlandieri
                                                   [Echinocereus blankii]
                                             Echinocereus blanckii
                                             Echinocereus bonkerae
                                                   [Echinocereus fasciculatus var. bonkerae]
                                                   [Echinocereus fendleri var. bonkerae]
                                             Echinocereus bristolii
                                             Echinocereus chisosensis
                                                   [Echinocereus chisoensis]
                                               Echinocereus chisosensis subsp. chisosensis
                                                     [Echinocereus reichenbachii var. chisoensis]
                                             Echinocereus coccineus
                                               Echinocereus coccineus subsp. coccineus
                                                     [Coryphantha vivipara var. aggregata]
                                                     [Echinocereus coccineus var. conoideus]
                                                     [Echinocereus coccineus var. inermis]
                                                     [Echinocereus kunzei]
                                                     [Echinocereus octacanthus]
                                                     [Echinocereus polyacanthus var. rosei]
                                                     [Echinocereus triglochidiatus var. hexaedrus]
                                                     [Echinocereus triglochidiatus var. inermis]
                                                     [Echinocereus triglochidiatus var. melanacanthus]
                                                     [Echinocereus triglochidiatus var. octacanthus]
                                                     [Mammillaria aggregata]
                                               Echinocereus coccineus subsp. paucispinus
                                                     [Echinocereus coccineus var. paucispinus]
                                                     [Echinocereus triglochidiatus var. paucispinus]
                                               Echinocereus coccineus var. coccineus
                                                     [Coryphantha vivipara var. aggregata]
                                                     [Echinocereus coccineus var. conoideus]
                                                     [Echinocereus coccineus var. inermis]
                                                     [Echinocereus octacanthus]
                                                     [Echinocereus polyacanthus var. rosei]
                                                     [Echinocereus triglochidiatus var. hexaedrus]
                                                     [Echinocereus triglochidiatus var. inermis]
                                                     [Echinocereus triglochidiatus var. melanacanthus]
                                                     [Echinocereus triglochidiatus var. octacanthus]
                                                     [Mammillaria aggregata]
                                               Echinocereus coccineus var. gurneyi
                                                     [Echinocereus triglochidiatus var. gurneyi]
                                             Echinocereus dasyacanthus
                                                   [Echinocereus ctenoides]
                                                   [Echinocereus dasyacanthus var. hildmannii]
                                                   [Echinocereus pectinatus var. ctenoides]
                                                   [Echinocereus pectinatus var. dasyacanthus]
                                                   [Echinocereus pectinatus var. neomexicanus]
                                             Echinocereus davisii
                                                   [Echinocereus viridiflorus subsp. davisii]
                                                   [Echinocereus viridiflorus var. davisii]
                                             Echinocereus engelmannii
                                                   [Echinocereus engelmannii var. howei]
                                                   [Echinocereus engelmannii var. munzii]
                                                   [Echinocereus engelmannii var. purpureus]
                                                   [Echinocereus munzii]
                                               Echinocereus engelmannii var. acicularis
                                               Echinocereus engelmannii var. armatus
                                               Echinocereus engelmannii var. chrysocentrus
                                               Echinocereus engelmannii var. engelmannii
                                               Echinocereus engelmannii var. variegatus
                                             Echinocereus enneacanthus
                                               Echinocereus enneacanthus subsp. brevispinus
                                                     [Echinocereus enneacanthus var. brevispinus]
                                                     [Echinocereus enneacanthus var. carnosus]
                                               Echinocereus enneacanthus subsp. enneacanthus
                                                     [Echinocereus dubius]
                                                     [Echinocereus enneacanthus var. dubius]
                                               Echinocereus enneacanthus var. enneacanthus
                                                     [Echinocereus dubius]
                                                     [Echinocereus enneacanthus var. dubius]
                                             Echinocereus fasciculatus
                                                   [Echinocereus abbeae]
                                                   [Echinocereus boyce-thompsonii]
                                                   [Echinocereus fendleri var. fasciculatus]
                                                   [Echinocereus fendleri var. robustus]
                                                   [Echinocereus rectispinus var. robustus]
                                                   [Echinocereus reichenbachii var. robustus]
                                             Echinocereus fendleri
                                               Echinocereus fendleri subsp. fendleri
                                                     [Echinocereus fendleri var. kuenzleri]
                                                     [Echinocereus hempelii]
                                                     [Echinocereus kuenzleri]
                                               Echinocereus fendleri subsp. rectispinus
                                                     [Echinocereus fendleri var. rectispinus]
                                                     [Echinocereus hempelii subsp. rectispinus]
                                                     [Echinocereus rectispinus]
                                               Echinocereus fendleri var. fendleri
                                             Echinocereus ledingii
                                                   [Echinocereus fendleri var. ledingii]
                                             Echinocereus nicholii
                                                   [Echinocereus engelmannii var. nicholii]
                                             Echinocereus papillosus
                                                   [Echinocereus angusticeps]
                                                   [Echinocereus berlandieri var. angusticeps]
                                                   [Echinocereus berlandieri var. papillosus]
                                                   [Echinocereus blankii var. angusticeps]
                                                   [Echinocereus papillosus var. angusticeps]
                                               Echinocereus papillosus var. papillosus
                                                     [Echinocereus berlandieri var. papillosus]
                                             Echinocereus pectinatus
                                               Echinocereus pectinatus subsp. ctenoides
                                                     [Echinocereus ctenoides]
                                                     [Echinocereus pectinatus var. ctenoides]
                                               Echinocereus pectinatus subsp. wenigeri
                                                     [Echinocereus pectinatus var. wenigeri]
                                               Echinocereus pectinatus var. pectinatus
                                             Echinocereus pentalophus
                                             Echinocereus polyacanthus
                                                   [Echinocereus triglochidiatus var. polyacanthus]
                                             Echinocereus poselgeri
                                                   [Cereus poselgeri]
                                                   [Cereus tuberosus]
                                                   [Wilcoxia poselgeri]
                                             Echinocereus pseudopectinatus
                                                   [Echinocereus bristolii var. pseudopectinatus]
                                                   [Echinocereus pectinatus var. minor]
                                             Echinocereus reichenbachii
                                                   [Echinocereus albispinus]
                                                   [Echinocereus baileyi var. albispinus]
                                                   [Echinocereus baileyi]
                                                   [Echinocereus caespitosus var. minor]
                                                   [Echinocereus caespitosus var. perbellus]
                                                   [Echinocereus caespitosus var. purpureus]
                                                   [Echinocereus caespitosus]
                                                   [Echinocereus fitchii]
                                                   [Echinocereus melanocentrus]
                                                   [Echinocereus perbellus]
                                                   [Echinocereus reichenbachii subsp. baileyi]
                                                   [Echinocereus reichenbachii subsp. fitchii]
                                                   [Echinocereus reichenbachii subsp. perbellus]
                                                   [Echinocereus reichenbachii var. albertii]
                                                   [Echinocereus reichenbachii var. albispinus]
                                                   [Echinocereus reichenbachii var. fitchii]
                                               Echinocereus reichenbachii subsp. reichenbachii
                                                     [Echinocereus caespitosus var. minor]
                                                     [Echinocereus caespitosus var. purpureus]
                                                     [Echinocereus caespitosus]
                                               Echinocereus reichenbachii var. baileyi
                                               Echinocereus reichenbachii var. perbellus
                                               Echinocereus reichenbachii var. reichenbachii
                                             Echinocereus rigidissimus
                                                   [Cereus pectinatus var. rigidissimus]
                                                   [Echinocereus pectinatus var. rigidissimus]
                                             Echinocereus roetteri
                                                   [Echinocereus lloydii]
                                             Echinocereus russanthus
                                                   [Echinocereus chloranthus var. russanthus]
                                             Echinocereus stramineus
                                                   [Echinocereus enneacanthus var. stramineus]
                                             Echinocereus triglochidiatus
                                                   [Echinocereus mojavensis]
                                                   [Echinocereus triglochidiatus var. gonacanthus]
                                                   [Echinocereus triglochidiatus var. mojavensis]
                                                   [Echinocereus triglochidiatus var. toroweapensis]
                                               Echinocereus triglochidiatus var. triglochidiatus
                                                     [Echinocereus kunzei]
                                                     [Echinocereus triglochidiatus var. gonacanthus]
                                                     [Echinocereus triglochidiatus var. toroweapensis]
                                             Echinocereus viridiflorus
                                               Echinocereus viridiflorus subsp. chloranthus
                                                     [Echinocereus chloranthus var. neocapillus]
                                                     [Echinocereus chloranthus]
                                               Echinocereus viridiflorus subsp. correllii
                                                     [Echinocereus viridiflorus var. correllii]
                                               Echinocereus viridiflorus subsp. cylindricus
                                                     [Cereus viridiflorus var. cylindricus]
                                                     [Echinocereus chloranthus var. cylindricus]
                                                     [Echinocereus viridiflorus var. cylindricus]
                                               Echinocereus viridiflorus subsp. viridiflorus
                                                     [Echinocereus viridiflorus var. standleyi]
                                               Echinocereus viridiflorus var. chloranthus
                                                     [Echinocereus chloranthus]
                                               Echinocereus viridiflorus var. viridiflorus
                                                     [Echinocereus chloranthus var. neocapillus]
                                                     [Echinocereus viridiflorus var. standleyi]
                                     Echinomastus
                                     Echinopanax
                                     Epiphyllum
                                             Epiphyllum hookeri
                                             Epiphyllum oxypetalum
                                             Epiphyllum phyllanthus
                                     Epithelantha
                                             Epithelantha bokei
                                                   [Epithelantha micromeris var. bokei]
                                             Epithelantha micromeris
                                                   [Mammillaria micromeris]
                                               Epithelantha micromeris var. micromeris
                                     Escobaria
                                             Escobaria alversonii
                                                   [Coryphantha alversonii]
                                                   [Coryphantha vivipara var. alversonii]
                                                   [Escobaria vivipara var. alversonii]
                                                   [Mammillaria alversonii]
                                             Escobaria chihuahuensis
                                                   [Coryphantha strobiliformis]
                                             Escobaria dasyacantha
                                               Escobaria dasyacantha subsp. chaffeyi
                                                     [Coryphantha chaffeyi]
                                                     [Escobaria chaffeyi]
                                                     [Escobaria dasyacantha var. chaffeyi]
                                               Escobaria dasyacantha subsp. dasyacantha
                                                     [Coryphantha dasyacantha]
                                                     [Mammillaria dasyacantha]
                                               Escobaria dasyacantha var. dasyacantha
                                                     [Coryphantha dasyacantha]
                                                     [Mammillaria dasyacantha]
                                             Escobaria duncanii
                                                   [Coryphantha duncanii]
                                                   [Escobaria dasyacantha var. duncanii]
                                                   [Mammillaria duncanii]
                                             Escobaria emskoetteriana
                                                   [Coryphantha robertii]
                                                   [Escobaria bella]
                                                   [Escobaria runyonii]
                                                   [Mammillaria bella]
                                                   [Mammillaria robertii]
                                             Escobaria hesteri
                                                   [Coryphantha hesteri]
                                                   [Mammillaria hesteri]
                                             Escobaria minima
                                                   [Coryphantha minima]
                                                   [Coryphantha nellieae]
                                                   [Escobaria nellieae]
                                                   [Mammillaria nellieae]
                                             Escobaria missouriensis
                                                   [Coryphantha missouriensis var. caespitosa]
                                                   [Coryphantha missouriensis var. robustior]
                                                   [Coryphantha missouriensis]
                                                   [Coryphantha similis]
                                                   [Escobaria missouriensis subsp. navajoensis]
                                                   [Escobaria missouriensis var. caespitosa]
                                                   [Mammillaria missouriensis]
                                                   [Mammillaria roseiflora]
                                                   [Mammillaria similis var. robustior]
                                                   [Mammillaria similis]
                                                   [Neobesseya missouriensis]
                                                   [Neobesseya wissmannii]
                                                   [Neomammillaria similis]
                                               Escobaria missouriensis subsp. asperispina
                                               Escobaria missouriensis subsp. missouriensis
                                                     [Coryphantha missouriensis var. marstonii]
                                                     [Coryphantha missouriensis var. robustior]
                                                     [Coryphantha missouriensis]
                                                     [Escobaria missouriensis subsp. navajoensis]
                                                     [Mammillaria missouriensis]
                                                     [Mammillaria similis var. robustior]
                                                     [Neobesseya missouriensis]
                                                     [Neobesseya wissmannii]
                                               Escobaria missouriensis var. marstonii
                                               Escobaria missouriensis var. missouriensis
                                               Escobaria missouriensis var. robustior
                                               Escobaria missouriensis var. similis
                                             Escobaria robbinsorum
                                                   [Cochiseia robbinsiorum]
                                                   [Coryphantha robbinsiorum]
                                                   [Escobaria robbinsiorum]
                                             Escobaria sneedii
                                                   [Coryphantha strobiliformis var. durispina]
                                                   [Escobaria orcuttii var. koenigii]
                                                   [Escobaria orcuttii var. macraxima]
                                               Escobaria sneedii subsp. orcuttii
                                                     [Coryphantha albicolumnaria]
                                                     [Coryphantha organensis]
                                                     [Coryphantha strobiliformis var. orcuttii]
                                                     [Escobaria albicolumnaria]
                                                     [Escobaria guadalupensis]
                                                     [Escobaria orcuttii var. orcuttii]
                                                     [Escobaria orcuttii]
                                                     [Escobaria organensis]
                                                     [Escobaria sandbergii]
                                                     [Escobaria villardii]
                                                     [Mammillaria albicolumnaria]
                                               Escobaria sneedii subsp. sneedii
                                                     [Coryphantha sneedii var. leei]
                                                     [Coryphantha sneedii]
                                                     [Escobaria leei]
                                                     [Escobaria sneedii subsp. leei]
                                                     [Escobaria sneedii var. leei]
                                                     [Mammillaria leei]
                                                     [Mammillaria sneedii]
                                               Escobaria sneedii var. sneedii
                                                     [Coryphantha sneedii]
                                                     [Mammillaria sneedii]
                                             Escobaria strobiliformis
                                             Escobaria tuberculosa
                                                   [Coryphantha dasyacantha var. varicolor]
                                                   [Coryphantha strobiliformis]
                                                   [Escobaria dasyacantha var. varicolor]
                                                   [Escobaria tuberculosa var. varicolor]
                                                   [Mammillaria tuberculosa]
                                                   [Mammillaria varicolor]
                                             Escobaria vivipara
                                                   [Coryphantha arizonica]
                                                   [Coryphantha bisbeeana]
                                                   [Coryphantha deserti]
                                                   [Coryphantha fragrans]
                                                   [Coryphantha neomexicana]
                                                   [Coryphantha radiosa]
                                                   [Coryphantha vivipara var. arizonica]
                                                   [Coryphantha vivipara var. bisbeeana]
                                                   [Coryphantha vivipara var. buoflama]
                                                   [Coryphantha vivipara var. deserti]
                                                   [Coryphantha vivipara var. kaibabensis]
                                                   [Coryphantha vivipara var. neomexicana]
                                                   [Coryphantha vivipara var. radiosa]
                                                   [Coryphantha vivipara var. rosea]
                                                   [Coryphantha vivipara]
                                                   [Escobaria vivipara var. arizonica]
                                                   [Escobaria vivipara var. bisbeeana]
                                                   [Escobaria vivipara var. buoflama]
                                                   [Escobaria vivipara var. deserti]
                                                   [Escobaria vivipara var. kaibabensis]
                                                   [Escobaria vivipara var. neomexicana]
                                                   [Escobaria vivipara var. radiosa]
                                                   [Escobaria vivipara var. rosea]
                                                   [Mammillaria arizonica]
                                                   [Mammillaria deserti]
                                                   [Mammillaria fragrans]
                                                   [Mammillaria neomexicana]
                                                   [Mammillaria vivipara var. arizonica]
                                                   [Mammillaria vivipara var. borealis]
                                                   [Mammillaria vivipara var. deserti]
                                                   [Mammillaria vivipara var. neomexicana]
                                                   [Mammillaria vivipara var. radiosa]
                                                   [Mammillaria vivipara]
                                               Escobaria vivipara var. vivipara
                                                     [Coryphantha missouriensis var. marstonii]
                                                     [Coryphantha vivipara]
                                                     [Mammillaria vivipara var. borealis]
                                                     [Mammillaria vivipara]
                                     Ferocactus
                                             Ferocactus cylindraceus
                                               Ferocactus cylindraceus subsp. cylindraceus
                                                     [Echinocactus acanthodes]
                                                     [Ferocactus acanthodes]
                                               Ferocactus cylindraceus subsp. eastwoodiae
                                                     [Ferocactus acanthodes var. eastwoodiae]
                                                     [Ferocactus cylindraceus var. eastwoodiae]
                                                     [Ferocactus eastwoodiae]
                                               Ferocactus cylindraceus subsp. lecontei
                                                     [Echinocactus lecontei]
                                                     [Ferocactus acanthodes var. lecontei]
                                                     [Ferocactus cylindraceus var. lecontei]
                                                     [Ferocactus lecontei]
                                               Ferocactus cylindraceus var. cylindraceus
                                                     [Echinocactus acanthodes]
                                                     [Ferocactus acanthodes]
                                             Ferocactus emoryi
                                                   [Ferocactus covillei]
                                               Ferocactus emoryi subsp. covillei
                                                     [Ferocactus covillei]
                                             Ferocactus hamatacanthus
                                               Ferocactus hamatacanthus subsp. hamatacanthus
                                                     [Echinocactus hamatacanthus]
                                               Ferocactus hamatacanthus subsp. sinuatus
                                                     [Echinocactus sinuatus]
                                                     [Echinocactus viridescens]
                                                     [Ferocactus hamatacanthus var. sinuatus]
                                               Ferocactus hamatacanthus var. hamatacanthus
                                                     [Echinocactus hamatacanthus]
                                             Ferocactus viridescens
                                                   [Echinocactus viridescens]
                                             Ferocactus wislizeni
                                                   [Echinocactus wislizeni]
                                     Grusonia
                                             Grusonia aggeria
                                                   [Opuntia aggeria]
                                             Grusonia clavata
                                                   [Opuntia clavata]
                                             Grusonia densispina
                                                   [Opuntia densispina]
                                             Grusonia emoryi
                                                   [Opuntia emoryi]
                                                   [Opuntia stanlyi]
                                             Grusonia grahamii
                                                   [Opuntia grahamii]
                                                   [Opuntia schottii var. grahamii]
                                             Grusonia kunzei
                                                   [Opuntia kunzei]
                                                   [Opuntia stanlyi var. kunzei]
                                                   [Opuntia stanlyi var. peeblesiana]
                                                   [Opuntia wrightiana]
                                             Grusonia parishii
                                                   [Opuntia emoryi]
                                                   [Opuntia parishii]
                                                   [Opuntia stanlyi var. parishii]
                                             Grusonia pulchella
                                                   [Opuntia barkleyana]
                                                   [Opuntia brachyrhopalica]
                                                   [Opuntia gracilicylindrica]
                                                   [Opuntia pulchella]
                                                   [Opuntia pygmaea]
                                                   [Opuntia spectatissima]
                                                   [Opuntia tuberculosirhopalica]
                                                   [Opuntia wiegandii]
                                             Grusonia schottii
                                                   [Opuntia densispina]
                                                   [Opuntia schottii]
                                     Harrisia
                                             Harrisia aboriginum
                                                   [Cereus gracilis var. aboriginus]
                                             Harrisia eriophora
                                                   [Cereus eriophorus]
                                             Harrisia fragrans
                                                   [Cereus eriophorus var. fragrans]
                                             Harrisia gracilis
                                                   [Cereus gracilis]
                                             Harrisia martinii
                                                   [Cereus martinii]
                                                   [Eriocereus martinii]
                                             Harrisia pomanensis
                                                   [Harrisia bonplandii]
                                             Harrisia portoricensis
                                                   [Cereus portoricensis]
                                             Harrisia simpsonii
                                                   [Cereus gracilis var. simpsonii]
                                     Hartmannia
                                     Hylocereus
                                             Hylocereus costaricensis
                                             Hylocereus triangularis
                                                   [Cereus trigonus]
                                                   [Hylocereus trigonus]
                                             Hylocereus undatus
                                                   [Cereus undatus]
                                     Lemaireocereus
                                     Leptocereus
                                             Leptocereus grantianus
                                                   [Cereus grantianus]
                                             Leptocereus quadricostatus
                                                   [Cereus quadricostatus]
                                     Lophophora
                                             Lophophora williamsii
                                                   [Lophophora williamsii var. echinata]
                                     Lophopyrum
                                     Mammillaria
                                             Mammillaria barbata
                                                   [Mammillaria orestera]
                                             Mammillaria dioica
                                                   [Mammillaria dioica var. incerta]
                                             Mammillaria erythrosperma
                                             Mammillaria fasciculata
                                             Mammillaria grahamii
                                                   [Mammillaria grahamii var. oliviae]
                                                   [Mammillaria microcarpa var. auricarpa]
                                                   [Mammillaria microcarpa]
                                                   [Mammillaria milleri]
                                                   [Mammillaria oliviae]
                                               Mammillaria grahamii subsp. grahamii
                                                     [Mammillaria grahamii var. oliviae]
                                                     [Mammillaria microcarpa var. auricarpa]
                                                     [Mammillaria microcarpa]
                                                     [Mammillaria milleri]
                                                     [Mammillaria oliviae]
                                               Mammillaria grahamii var. grahamii
                                             Mammillaria heyderi
                                               Mammillaria heyderi subsp. gummifera
                                                     [Mammillaria gummifera]
                                               Mammillaria heyderi subsp. hemisphaerica
                                                     [Mammillaria gummifera var. hemisphaerica]
                                                     [Mammillaria heyderi var. hemisphaerica]
                                               Mammillaria heyderi subsp. heyderi
                                                     [Mammillaria gummifera var. applanata]
                                                     [Mammillaria heyderi var. applanata]
                                                     [Mammillaria heyderi var. bullingtoniana]
                                               Mammillaria heyderi subsp. macdougalii
                                                     [Mammillaria gummifera var. macdougalii]
                                                     [Mammillaria heyderi var. macdougalii]
                                                     [Mammillaria macdougalii]
                                               Mammillaria heyderi var. heyderi
                                                     [Mammillaria gummifera var. applanata]
                                                     [Mammillaria heyderi var. applanata]
                                             Mammillaria lasiacantha
                                                   [Mammillaria lasiacantha var. denudata]
                                             Mammillaria longimamma
                                             Mammillaria mainiae
                                             Mammillaria meiacantha
                                                   [Mammillaria gummifera var. meiacantha]
                                                   [Mammillaria heyderi subsp. meiacantha]
                                                   [Mammillaria heyderi var. meiacantha]
                                             Mammillaria nivosa
                                                   [Neomammillaria nivosa]
                                             Mammillaria nunezii
                                               Mammillaria nunezii subsp. bella
                                                     [Mammillaria bella]
                                             Mammillaria pottsii
                                             Mammillaria prolifera
                                               Mammillaria prolifera subsp. texana
                                                     [Mammillaria multiceps]
                                                     [Mammillaria prolifera var. texana]
                                             Mammillaria sphaerica
                                                   [Dolichothele sphaerica]
                                                   [Mammillaria longimamma var. sphaerica]
                                             Mammillaria tetrancistra
                                                   [Phellosperma tetrancistra]
                                             Mammillaria thornberi
                                             Mammillaria viridiflora
                                                   [Mammillaria orestera]
                                             Mammillaria wrightii
                                               Mammillaria wrightii subsp. wilcoxii
                                                     [Mammillaria meridiorosei]
                                                     [Mammillaria wilcoxii]
                                                     [Mammillaria wrightii var. wilcoxii]
                                               Mammillaria wrightii var. wrightii
                                                     [Mammillaria meridiorosei]
                                     Melocactus
                                             Melocactus intortus
                                                   [Cactus intortus]
                                     Neolloydia
                                             Neolloydia conoidea
                                                   [Echinocactus conoideus]
                                                   [Mammillaria conoidea]
                                     Nopalea
                                             Nopalea cochenillifera
                                                   [Cactus cochenilliferus]
                                                   [Opuntia cochenillifera]
                                     Opuntia
                                             Opuntia aciculata
                                                   [Opuntia engelmannii var. aciculata]
                                             Opuntia atrispina
                                             Opuntia aurea
                                                   [Opuntia basilaris var. aurea]
                                                   [Opuntia erinacea var. aurea]
                                             Opuntia aureispina
                                                   [Opuntia macrocentra var. aureispina]
                                             Opuntia basilaris
                                               Opuntia basilaris var. basilaris
                                                     [Opuntia basilaris var. ramosa]
                                                     [Opuntia basilaris var. whitneyana]
                                                     [Opuntia brachyclada subsp. humistrata]
                                                     [Opuntia whitneyana var. albiflora]
                                                     [Opuntia whitneyana]
                                               Opuntia basilaris var. brachyclada
                                                     [Opuntia brachyclada]
                                               Opuntia basilaris var. heilii
                                               Opuntia basilaris var. longiareolata
                                                     [Opuntia longiareolata]
                                               Opuntia basilaris var. treleasei
                                                     [Opuntia treleasei]
                                             Opuntia borinquensis
                                             Opuntia chisosensis
                                                   [Opuntia lindheimeri var. chisosensis]
                                             Opuntia chlorotica
                                             Opuntia columbiana
                                                   [Opuntia erinacea var. columbiana]
                                             Opuntia compressa
                                             Opuntia cubensis
                                                   [Opuntia antillana]
                                                   [Opuntia ochrocentra]
                                             Opuntia curvispina
                                                   [Opuntia littoralis var. martiniana]
                                                   [Opuntia macrocentra var. martiniana]
                                                   [Opuntia martiniana]
                                             Opuntia curvospina
                                             Opuntia delicata
                                             Opuntia demissa
                                             Opuntia discata
                                                   [Opuntia microcarpa]
                                             Opuntia edwardsii
                                             Opuntia ellisiana
                                             Opuntia engelmannii
                                                   [Opuntia engelmannii/phaeacantha/santa-rita]
                                                   [Opuntia engelmannii/phaeacantha]
                                                   [Opuntia engelmannii/santa-rita]
                                               Opuntia engelmannii var. cuija
                                                     [Opuntia lindheimeri var. cuija]
                                               Opuntia engelmannii var. engelmannii
                                                     [Opuntia dillei]
                                                     [Opuntia lindheimeri var. tricolor]
                                                     [Opuntia megacarpa]
                                                     [Opuntia microcarpa]
                                                     [Opuntia occidentalis var. megacarpa]
                                                     [Opuntia phaeacantha var. discata]
                                                     [Opuntia subarmata]
                                                     [Opuntia tardospina]
                                                     [Opuntia tricolor]
                                               Opuntia engelmannii var. flavispina
                                                     [Opuntia phaeacantha var. flavispina]
                                               Opuntia engelmannii var. flexospina
                                                     [Opuntia flexospina]
                                                     [Opuntia strigil var. flexospina]
                                               Opuntia engelmannii var. lindheimeri
                                                     [Opuntia engelmannii var. aciculata]
                                                     [Opuntia engelmannii var. alta]
                                                     [Opuntia engelmannii var. cacanapa]
                                                     [Opuntia engelmannii var. dulcis]
                                                     [Opuntia engelmannii var. texana]
                                                     [Opuntia lindheimeri var. lehmannii]
                                                     [Opuntia lindheimeri var. tricolor]
                                                     [Opuntia lindheimeri]
                                                     [Opuntia tardospina]
                                                     [Opuntia tricolor]
                                               Opuntia engelmannii var. linguiformis
                                                     [Opuntia lindheimeri var. linguiformis]
                                                     [Opuntia linguiformis]
                                             Opuntia ficus-indica
                                                   [Cactus ficus-indica]
                                                   [Opuntia opuntia]
                                             Opuntia fosbergii
                                             Opuntia fragilis
                                                   [Cactus fragilis]
                                                   [Opuntia brachyarthra]
                                                   [Opuntia fragilis subsp. brachyarthra]
                                                   [Opuntia fragilis var. brachyarthra]
                                                   [Opuntia fragilis var. denudata]
                                                   [Opuntia schweriniana]
                                               Opuntia fragilis var. fragilis
                                             Opuntia gosseliniana
                                                   [Opuntia chlorotica var. gosseliniana]
                                                   [Opuntia violacea var. gosseliniana]
                                             Opuntia humifusa
                                                   [Opuntia austrina]
                                                   [Opuntia calcicola]
                                                   [Opuntia compressa var. allairei]
                                                   [Opuntia compressa var. fuscoatra]
                                                   [Opuntia compressa var. microsperma]
                                                   [Opuntia cumulicola]
                                                   [Opuntia rafinesquei]
                                                   [Opuntia rubrifolia]
                                               Opuntia humifusa var. ammophila
                                                     [Opuntia ammophila]
                                                     [Opuntia compressa var. ammophila]
                                                     [Opuntia impedata]
                                                     [Opuntia lata]
                                                     [Opuntia pisciformis]
                                                     [Opuntia turbinata]
                                                     [Opuntia turgida]
                                               Opuntia humifusa var. austrina
                                                     [Opuntia compressa var. austrina]
                                                     [Opuntia cumulicola]
                                                     [Opuntia eburnispina]
                                                     [Opuntia pollardii]
                                               Opuntia humifusa var. humifusa
                                                     [Opuntia calcicola]
                                                     [Opuntia compressa var. allairei]
                                                     [Opuntia compressa var. fuscoatra]
                                                     [Opuntia compressa var. microsperma]
                                                     [Opuntia opuntia]
                                                     [Opuntia rafinesquei]
                                             Opuntia leucotricha
                                             Opuntia littoralis
                                                   [Opuntia covillei var. piercei]
                                                   [Opuntia engelmannii var. littoralis]
                                                   [Opuntia occidentalis var. littoralis]
                                                   [Opuntia occidentalis var. piercei]
                                                   [Opuntia phaeacantha var. piercei]
                                               Opuntia littoralis var. austrocalifornica
                                               Opuntia littoralis var. littoralis
                                                     [Opuntia engelmannii var. littoralis]
                                                     [Opuntia occidentalis var. littoralis]
                                               Opuntia littoralis var. piercei
                                                     [Opuntia covillei var. piercei]
                                                     [Opuntia occidentalis var. piercei]
                                                     [Opuntia phaeacantha var. piercei]
                                             Opuntia macrocentra
                                                   [Opuntia violacea var. castetteri]
                                                   [Opuntia violacea]
                                               Opuntia macrocentra var. macrocentra
                                                     [Opuntia violacea var. castetteri]
                                                     [Opuntia violacea var. macrocentra]
                                                     [Opuntia violacea]
                                               Opuntia macrocentra var. minor
                                             Opuntia macrorhiza
                                                   [Opuntia compressa var. grandiflora]
                                                   [Opuntia compressa var. macrorhiza]
                                                   [Opuntia compressa var. stenochila]
                                                   [Opuntia grandiflora]
                                                   [Opuntia leptocarpa]
                                                   [Opuntia mackensenii]
                                                   [Opuntia plumbea]
                                                   [Opuntia sphaerocarpa]
                                               Opuntia macrorhiza var. macrorhiza
                                                     [Opuntia compressa var. grandiflora]
                                                     [Opuntia compressa var. macrorhiza]
                                                     [Opuntia compressa var. stenochila]
                                                     [Opuntia grandiflora]
                                                     [Opuntia leptocarpa]
                                                     [Opuntia mackensenii]
                                                     [Opuntia plumbea]
                                                     [Opuntia sphaerocarpa]
                                                     [Opuntia tenuispina]
                                             Opuntia microdasys
                                             Opuntia missouriensis
                                             Opuntia monacantha
                                             Opuntia nicholii
                                             Opuntia occidentalis
                                             Opuntia oricola
                                             Opuntia phaeacantha
                                                   [Opuntia arizonica]
                                                   [Opuntia camanchica]
                                                   [Opuntia canada]
                                                   [Opuntia charlestonensis]
                                                   [Opuntia chihuahuensis]
                                                   [Opuntia dulcis]
                                                   [Opuntia engelmannii var. cycloides]
                                                   [Opuntia engelmannii/phaeacantha/santa-rita]
                                                   [Opuntia engelmannii/phaeacantha]
                                                   [Opuntia gilvescens]
                                                   [Opuntia laevis]
                                                   [Opuntia mojavensis]
                                                   [Opuntia phaeacantha var. brunnea]
                                                   [Opuntia phaeacantha var. mojavensis]
                                                   [Opuntia phaeacantha var. nigricans]
                                                   [Opuntia phaeacantha var. superbospina]
                                                   [Opuntia superbospina]
                                                   [Opuntia woodsii]
                                               Opuntia phaeacantha var. camanchica
                                               Opuntia phaeacantha var. laevis
                                               Opuntia phaeacantha var. major
                                               Opuntia phaeacantha var. phaeacantha
                                             Opuntia pinkavae
                                                   [Opuntia basilaris var. woodburyi]
                                             Opuntia polyacantha
                                                   [Opuntia arenaria]
                                                   [Opuntia heacockiae]
                                                   [Opuntia rhodantha]
                                                   [Opuntia rutila]
                                               Opuntia polyacantha var. arenaria
                                                     [Opuntia arenaria]
                                               Opuntia polyacantha var. erinacea
                                                     [Opuntia erinacea var. erinacea]
                                                     [Opuntia erinacea var. paucispina]
                                                     [Opuntia erinacea var. ursina]
                                                     [Opuntia erinacea]
                                                     [Opuntia sphaerocarpa var. utahensis]
                                                     [Opuntia ursina]
                                               Opuntia polyacantha var. hystricina
                                                     [Opuntia erinacea var. hystricina]
                                                     [Opuntia erinacea var. xanthostemma]
                                                     [Opuntia hystricina]
                                               Opuntia polyacantha var. juniperina
                                                     [Opuntia juniperina]
                                               Opuntia polyacantha var. nicholii
                                               Opuntia polyacantha var. polyacantha
                                                     [Opuntia erinacea var. paucispina]
                                                     [Opuntia erinacea var. ursina]
                                                     [Opuntia erinacea var. utahensis]
                                                     [Opuntia erinacea var. xanthostemma]
                                                     [Opuntia heacockiae]
                                                     [Opuntia juniperina]
                                                     [Opuntia missouriensis var. trichophora]
                                                     [Opuntia polyacantha var. trichophora]
                                                     [Opuntia rhodantha var. spinosior]
                                                     [Opuntia rhodantha]
                                                     [Opuntia rubrifolia]
                                                     [Opuntia rutila]
                                                     [Opuntia schweriniana]
                                                     [Opuntia sphaerocarpa var. utahensis]
                                                     [Opuntia trichophora]
                                               Opuntia polyacantha var. rufispina
                                             Opuntia pottsii
                                                   [Opuntia ballii]
                                                   [Opuntia macrorhiza var. pottsii]
                                                   [Opuntia phaeacantha var. tenuispina]
                                                   [Opuntia tenuiflora]
                                                   [Opuntia tenuispina]
                                             Opuntia pusilla
                                                   [Cactus pusillus]
                                                   [Opuntia drummondii]
                                                   [Opuntia tracyi]
                                             Opuntia repens
                                             Opuntia rooneyi
                                             Opuntia rufida
                                             Opuntia santa-rita
                                                   [Opuntia chlorotica var. santa-rita]
                                                   [Opuntia engelmannii/phaeacantha/santa-rita]
                                                   [Opuntia engelmannii/santa-rita]
                                                   [Opuntia violacea var. santa-rita]
                                             Opuntia spinosibacca
                                                   [Opuntia phaeacantha var. spinosibacca]
                                             Opuntia stricta
                                                   [Cactus dillenii]
                                                   [Cactus strictus]
                                                   [Opuntia atrocapensis]
                                                   [Opuntia bentonii]
                                                   [Opuntia dillenii]
                                                   [Opuntia macrantha]
                                                   [Opuntia magnifica]
                                                   [Opuntia nitens]
                                                   [Opuntia tunoidea]
                                                   [Opuntia zebrina]
                                               Opuntia stricta var. dillenii
                                               Opuntia stricta var. stricta
                                             Opuntia strigil
                                             Opuntia tomentosa
                                             Opuntia tortispina
                                                   [Opuntia cymochila]
                                             Opuntia triacantha
                                                   [Cactus triacanthus]
                                                   [Opuntia abjecta]
                                             Opuntia valida
                                             Opuntia vaseyi
                                                   [Opuntia covillei]
                                                   [Opuntia littoralis var. vaseyi]
                                                   [Opuntia occidentalis var. covillei]
                                                   [Opuntia occidentalis var. vaseyi]
                                             Opuntia vulgaris
                                             Opuntia wootonii
                                                   [Opuntia engelmannii var. wootonii]
                                                   [Opuntia phaeacantha var. wootonii]
                                     Pachycereus
                                             Pachycereus schottii
                                                   [Cereus schottii]
                                                   [Lophocereus schottii]
                                     Pediocactus
                                             Pediocactus bradyi
                                             Pediocactus despainii
                                             Pediocactus knowltonii
                                             Pediocactus paradinei
                                             Pediocactus peeblesianus
                                                   [Pediocactus peeblesianus var. fickeiseniae]
                                               Pediocactus peeblesianus subsp. fickeiseniorum
                                                     [Pediocactus peeblesianus var. fickeiseniae]
                                               Pediocactus peeblesianus var. maianus
                                               Pediocactus peeblesianus var. peeblesianus
                                             Pediocactus sileri
                                             Pediocactus simpsonii
                                                   [Echinocactus simpsonii var. robustior]
                                                   [Echinocactus simpsonii]
                                                   [Pediocactus simpsonii subsp. robustior]
                                                   [Pediocactus simpsonii var. minor]
                                                   [Pediocactus simpsonii var. robustior]
                                               Pediocactus simpsonii var. simpsonii
                                                     [Echinocactus simpsonii]
                                             Pediocactus winkleri
                                     Peniocereus
                                             Peniocereus greggii
                                                   [Cereus greggii]
                                               Peniocereus greggii var. greggii
                                                     [Cereus greggii]
                                               Peniocereus greggii var. transmontanus
                                                     [Cereus greggii var. transmontanus]
                                             Peniocereus lazaro-cardenasii
                                             Peniocereus striatus
                                                   [Cereus diguetii]
                                                   [Cereus striatus]
                                                   [Neoevansia striata]
                                                   [Wilcoxia diguetii]
                                                   [Wilcoxia striata]
                                     Peniophyllum
                                     Pereskia
                                             Pereskia aculeata
                                                   [Cactus pereskia]
                                                   [Pereskia aculeata var. godseffiana]
                                                   [Pereskia pereskia]
                                             Pereskia grandifolia
                                     Pilosocereus
                                             Pilosocereus aurisetus
                                             Pilosocereus polygonus
                                                   [Cephalocereus deeringii]
                                                   [Cephalocereus keyensis]
                                                   [Cereus robinii var. deeringii]
                                                   [Cereus robinii var. keyensis]
                                                   [Cereus robinii]
                                                   [Pilocereus robinii]
                                                   [Pilosocereus bahamensis]
                                             Pilosocereus robinii
                                               Pilosocereus robinii var. deeringii
                                                     [Cephalocereus deeringii]
                                                     [Cereus robinii var. deeringii]
                                               Pilosocereus robinii var. robinii
                                                     [Cephalocereus keyensis]
                                                     [Cereus robinii var. keyensis]
                                                     [Cereus robinii]
                                                     [Pilocereus robinii]
                                             Pilosocereus royenii
                                                   [Cephalocereus nobilis]
                                                   [Cephalocereus royenii]
                                                   [Cereus royenii]
                                                   [Cereus strictus]
                                                   [Pilocereus strictus]
                                                   [Pilosocereus nobilis]
                                     Rhipsalis
                                             Rhipsalis baccifera
                                                   [Cassytha baccifera]
                                                   [Rhipsalis cassutha]
                                     Schlumbergera
                                             Schlumbergera truncata
                                                   [Epiphyllum truncatum]
                                                   [Zygocactus truncatus]
                                     Sclerocactus
                                             Sclerocactus blainei
                                                   [Sclerocactus spinosior subsp. blainei]
                                             Sclerocactus brevihamatus
                                                   [Ancistrocactus brevihamatus]
                                                   [Echinocactus brevihamatus]
                                               Sclerocactus brevihamatus subsp. brevihamatus
                                                     [Ancistrocactus brevihamatus]
                                                     [Echinocactus brevihamatus]
                                               Sclerocactus brevihamatus subsp. tobuschii
                                                     [Ancistrocactus tobuschii]
                                                     [Echinocactus tobuschii]
                                             Sclerocactus brevispinus
                                                   [Sclerocactus wetlandicus var. ilseae]
                                                   [Sclerocactus whipplei var. ilseae]
                                             Sclerocactus cloverae
                                                   [Sclerocactus cloveriae]
                                                   [Sclerocactus whipplei subsp. heilii]
                                                   [Sclerocactus whipplei var. heilii]
                                                   [Sclerocactus whipplei var. reevesii]
                                               Sclerocactus cloverae subsp. brackii
                                                     [Sclerocactus cloveriae subsp. brackii]
                                             Sclerocactus erectocentrus
                                                   [Echinocactus erectocentrus]
                                                   [Echinomastus erectocentrus]
                                                   [Neolloydia erectocentra]
                                               Sclerocactus erectocentrus var. acunensis
                                                     [Echinomastus acunensis]
                                                     [Echinomastus erectocentrus var. acunensis]
                                                     [Neolloydia erectocentra var. acunensis]
                                             Sclerocactus glaucus
                                                   [Pediocactus glaucus]
                                                   [Sclerocactus whipplei var. glaucus]
                                             Sclerocactus intertextus
                                                   [Echinocactus intertextus var. dasyacanthus]
                                                   [Echinocactus intertextus]
                                                   [Echinomastus intertextus var. dasyacanthus]
                                                   [Echinomastus intertextus]
                                                   [Neolloydia intertexta var. dasyacantha]
                                                   [Neolloydia intertexta]
                                                   [Sclerocactus intertextus var. dasyacanthus]
                                               Sclerocactus intertextus var. intertextus
                                             Sclerocactus johnsonii
                                                   [Echinocactus johnsonii var. lutescens]
                                                   [Echinocactus johnsonii]
                                                   [Echinomastus johnsonii]
                                                   [Neolloydia johnsonii var. lutescens]
                                                   [Neolloydia johnsonii]
                                             Sclerocactus mariposensis
                                                   [Echinocactus mariposensis]
                                                   [Echinomastus mariposensis]
                                                   [Neolloydia mariposensis]
                                             Sclerocactus mesae-verdae
                                                   [Coloradoa mesae-verdae]
                                                   [Echinocactus mesae-verdae]
                                                   [Pediocactus mesae-verdae]
                                             Sclerocactus nyensis
                                             Sclerocactus papyracanthus
                                                   [Echinocactus papyracanthus]
                                                   [Pediocactus papyracanthus]
                                                   [Toumeya papyracantha]
                                             Sclerocactus parviflorus
                                                   [Echinocactus whipplei var. intermedius]
                                                   [Pediocactus parviflorus subsp. havasupaiensis]
                                                   [Pediocactus parviflorus]
                                                   [Sclerocactus contortus]
                                                   [Sclerocactus havasupaiensis]
                                                   [Sclerocactus intermedius]
                                                   [Sclerocactus parviflorus subsp. havasupaiensis]
                                                   [Sclerocactus parviflorus subsp. intermedius]
                                                   [Sclerocactus parviflorus var. intermedius]
                                                   [Sclerocactus terrae-canyonae]
                                                   [Sclerocactus whipplei var. intermedius]
                                               Sclerocactus parviflorus subsp. parviflorus
                                                     [Sclerocactus cloveriae subsp. brackii]
                                                     [Sclerocactus cloveriae]
                                                     [Sclerocactus contortus]
                                                     [Sclerocactus whipplei var. heilii]
                                                     [Sclerocactus whipplei var. reevesii]
                                                     [Sclerocactus whipplei var. roseus]
                                               Sclerocactus parviflorus subsp. terrae-canyonae
                                                     [Sclerocactus terrae-canyonae]
                                             Sclerocactus polyancistrus
                                                   [Echinocactus polyancistrus]
                                             Sclerocactus pubispinus
                                             Sclerocactus scheeri
                                                   [Ancistrocactus scheeri]
                                                   [Echinocactus scheeri]
                                             Sclerocactus schlesseri
                                             Sclerocactus sileri
                                                   [Sclerocactus pubispinus var. sileri]
                                             Sclerocactus spinosior
                                                   [Echinocactus whipplei var. spinosior]
                                                   [Sclerocactus pubispinus var. spinosior]
                                                   [Sclerocactus whipplei var. spinosior]
                                               Sclerocactus spinosior subsp. spinosior
                                                     [Echinocactus whipplei var. spinosior]
                                                     [Sclerocactus pubispinus var. spinosior]
                                                     [Sclerocactus whipplei var. spinosior]
                                             Sclerocactus uncinatus
                                                   [Ancistrocactus uncinatus]
                                                   [Echinocactus uncinatus]
                                                   [Ferocactus uncinatus]
                                                   [Glandulicactus uncinatus]
                                               Sclerocactus uncinatus subsp. wrightii
                                                     [Ancistrocactus uncinatus var. wrightii]
                                                     [Echinocactus uncinatus var. wrightii]
                                                     [Ferocactus uncinatus var. wrightii]
                                                     [Glandulicactus uncinatus var. wrightii]
                                                     [Sclerocactus uncinatus var. wrightii]
                                             Sclerocactus warnockii
                                                   [Echinocactus warnockii]
                                                   [Echinomastus gautii]
                                                   [Echinomastus warnockii]
                                                   [Neolloydia gautii]
                                                   [Neolloydia warnockii]
                                                   [Turbinicarpus gautii]
                                             Sclerocactus wetlandicus
                                             Sclerocactus whipplei
                                                   [Echinocactus whipplei]
                                                   [Pediocactus whipplei]
                                                   [Sclerocactus parviflorus var. blessingiae]
                                                   [Sclerocactus whipplei var. roseus]
                                             Sclerocactus wrightiae
                                     Selenicereus
                                             Selenicereus grandiflorus
                                                   [Cereus grandiflorus var. armatus]
                                                   [Cereus grandiflorus]
                                                   [Selenicereus macdonaldiae]
                                               Selenicereus grandiflorus subsp. grandiflorus
                                                     [Cereus coniflorus]
                                                     [Selenicereus coniflorus]
                                             Selenicereus pteranthus
                                                   [Cereus pteranthus]
                                                   [Selenicereus macdonaldiae]
                                             Selenicereus spinulosus
                                                   [Cereus spinulosus]
                                     Stenocereus
                                             Stenocereus aragonii
                                             Stenocereus fimbriatus
                                                   [Cereus hystrix]
                                                   [Lemaireocereus hystrix]
                                                   [Stenocereus hystrix]
                                                   [Stenocereus peruvianus]
                                             Stenocereus thurberi
                                                   [Cereus thurberi]
                                                   [Lemaireocereus thurberi]
                                                   [Pachycereus thurberi]
                                     Thelocactus
                                             Thelocactus bicolor
                                                   [Echinocactus bicolor var. schottii]
                                                   [Echinocactus bicolor]
                                                   [Thelocactus bicolor var. schottii]
                                               Thelocactus bicolor subsp. flavidispinus
                                                     [Echinocactus flavidispinus]
                                                     [Thelocactus bicolor var. flavidispinus]
                                               Thelocactus bicolor var. bicolor
                                                     [Echinocactus bicolor var. schottii]
                                                     [Echinocactus bicolor]
                                                     [Thelocactus bicolor var. schottii]
                                             Thelocactus setispinus
                                                   [Echinocactus setispinus var. hamatus]
                                                   [Echinocactus setispinus]
                                                   [Ferocactus setispinus]
                                     Turbinicarpus
                                     Zygocactus