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Published In: On the Asclepiadeae 28. 1810. (Asclepiadeae) Name publication detail

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: S.I. ALI
General/Distribution: A genus with about 4 species distributed in tropical and subtropical Africa and Asia and (introduced in?) Central and S. America. Represented in Pakistan by 1-2 species.


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Erect shrubs or small trees. Leaves large, opposite decussate, somewhat fleshy. Flowers in termainal or axillary umbelloid cymes. Calyx deeply 5-lobed. Corolla 5-lobed, lobes free about for c. 2/3 of the way or less, tips usually purple. Corona of 5 fleshy laterally compressed lobes radiating from the gynostegium, each with a recurved vesicle at the base and a pair of auricles at the apex. Anthers short and broad with a solitary pollinium pendulous in each cell. Stigma broad, pentagonal. Follicles inflated with an air sac round the seed producing region. Seeds comose.

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1 Corona lobes hairy, shorter than the staminal column, curved on the back above the spur, apex rounded with 2 obtuse auricles just below it 2 Calotropis gigantea
+ Corona lobes glabrous, equally or exceeding staminal column, straight or nearly so on the the acute upcurved spur, the apex bifid and without auricles 1 Calotropis procera subsp. hamiltonii
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