What is "leptadenia"

Leptadenia is a genus of plant in family Apocynaceae, first described as a genus in 1810. It is native to Africa, including Madagascar, as well as southwest Asia and the Indian Subcontinent.

1. Leptadenia arborea (Forssk.) Schweinf. - Sudan, Ethiopia
2. Leptadenia lancifolia (Schumach. & Thonn.) Decne. - tropical Africa
3. Leptadenia madagascariensis Decne. - Madagascar
4. Leptadenia pyrotechnica (Forssk.) Decne. - widespread from Algeria to India
5. Leptadenia reticulata (Retz.) Wight & Arn. - Madagascar

transferred to other genera ( Genianthus, Periploca)

1. Leptadenia elliptica Blume synonym of Genianthus ellipticus (Blume) Bakh. f.
2. Leptadenia visciformis Vatke synonym of Periploca visciformis (Vatke) K. Schum.