font settings

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia

Asclepias

(Genus)

Overview

[ Back to top ]

Herbs, base frequently woody. Leaves opposite or whorled, short petiolate. Cymes terminal and extra-axillary, erect, umbel-like, many flowered. Calyx glands 5-10. Corolla rotate, deeply parted; lobes reflexed, valvate or rarely overlapping to right. Corona lobes 5, inserted on gynostegium, erect, apex hooded, with an incurved, ligular-hornlike adaxial appendage. Stamens inserted at base of corolla tube; filaments connate into a tube; anther appendages incurved; pollinia 2 per pollinarium, pendulous. Stigma head conical. Follicles fusiform, apex acuminate. Seeds flat, with a long coma.

About 120 species: America, some naturalized in Old World; one species in China.[1]

Photos

[ Back to top ]

Taxonomy

[ Back to top ]

The Genus Asclepias is further organized into finer groupings including:

Footnotes

[ Back to top ]
  1. "Asclepias". in Flora of China Vol. 16 Page 203. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.

Sources

[ Back to top ]
Last Revised: January 24, 2010
2010/01/24 06:07:17