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Apocynaceae
Apocynaceae image
Anthony Mendoza
  • VPAP
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JANAS 27(2)
PLANT: Trees, shrubs, vines, or perennial herbs, usually with milky sap. LEAVES: opposite, alternate, or whorled, simple, entire, estipulate. INFLORESCENCE: cymes to panicles, or flowers solitary. FLOWERS: perfect, actinomorphic; calyx lobes 5, imbricate in bud; corolla 5-merous, syrnpetalous, twisted in bud, campanulate to salverform; stamens 5, epipetalous, alternating with the lobes, the anthers often connivent around the stigma; pistil 2-carpelled, ovaries 2, superior, distinct or united apically, each l-loculed, the style 1 with a single, often enlarged stigma. FRUIT: (in ours) a pair of follicles, the seeds several, naked or comose. NOTES: 215 genera, 2100 spp., mostly tropical with a few temperate. Includes many important drug plants (Strophanthus, Catharanthus) and ornamentals (Nerium, Vinca, Thevetia). Woodson, R. E. 1938. N. Amer. Flora 29:103-192. Rosatti, T. J. 1989. J. Arnold Arbor. 70:307-401. REFERENCES: McLaughlin, Steven, P. 1994. Apocynaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 164-168.
Species within checklist: Lyndon B. Johnson National Grassland NEON (CLBJ) plants - Southern Plains (D11)
Asclepias engelmanniana
Image of Asclepias engelmanniana
NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.