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Gymnosperma glutinosum (Spreng.) Less.  

No occurrences found

Family: Asteraceae
gumhead
[Selloa glutinosa Spreng., moreXanthocephalum glutinosum (Spreng.) Shinners]
Gymnosperma glutinosum image
L.R. Landrum
  • FNA
  • Field Guide
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Guy L. Nesom in Flora of North America (vol. 20)
Leaves mostly 25-50 mm, relatively even in lengths to heads. Involucres 3-3.8 mm. Ray corollas 2-3 mm. Cypselae 1-1.4 mm. 2n = 16. Flowering (Apr-)Jun-Nov(-Dec). Gravelly, sandy, or loamy flats, rocky slopes, crevices and ledges, streambeds, creosote bush to pinyon-juniper and pine-oak-maple; (300-)600-2300(-2700) m; Ariz., N.Mex., Tex.; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas, San Luis Potosí); Central America (Guatemala).
FNA 2006, Powell 1998, Kearney and Peebles 1969
Common Name: gumhead Duration: Perennial Nativity: Native Lifeform: Subshrub General: Stiffly erect shrub 50-150 cm tall, glabrous, heavily resinous, and taprooted. Leaves: Alternate, sessile, linear or linear-lanceolate, entire, sticky, 2-5 cm long, entire margins. Flowers: Heads radiate, in terminal corymbiform arrays; involucres cylindro-turbinate to elliptic-obovoid 3-4 mm high, sticky; phyllaries in 2-4 series, overlapping, mostly completely whitish indurate, sometimes faintly green at tips; glabrous receptacle; few ray flowers, corolla yellow 2-3 mm, tube longer than ligule; disk flowers few, corolla yellow. Fruits: Cypselae hairy, 1-1.4 mm; pappus reduced to microscopic ring or absent. Ecology: Found on gravelly, sandy, or loamy flats, rocky slopes, crevices and ledges, and in streambeds from 1,000-6,000 ft (305-1829 m); flowers March-December. Distribution: s AZ, s NM, s TX; south throughout MEX, northern C. Amer. and disjunct to S. America. Notes: Monotypic genus that is related to Gutierrezia, but recognized by being its erect, shrubby habit, sticky-resinous stems, leaves, and heads which are in dense, terminal, flat-topped arrays; differs from Gutierrezia in its being taller, larger leaves, inflorescence structure, cylindric heads, glabrous receptacles and short ray florets. Ethnobotany: Used to treat diarrhea, rheumatism, and stomach ulcers. Etymology: Gymnosperma comes from Greek Gymnos, for naked and sperma, seed, which refers to the epappose achene, while glutinosum means sticky. Synonyms: Selloa glutinosa, Xanthocephalum glutinosum Editor: SBuckley 2010, FSCoburn 2015
Gymnosperma glutinosum
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Gymnosperma glutinosum image
Frank Rose
Gymnosperma glutinosum image
Liz Makings
Gymnosperma glutinosum image
L.R. Landrum
Gymnosperma glutinosum image
L.R. Landrum
Gymnosperma glutinosum image
Patrick Alexander
Gymnosperma glutinosum image
Patrick Alexander
Gymnosperma glutinosum image
Patrick Alexander
Gymnosperma glutinosum image
Patrick Alexander
Gymnosperma glutinosum image
L.R. Landrum
Gymnosperma glutinosum image
Liz Makings
Gymnosperma glutinosum image
Liz Makings
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