What is "orthanthera"

Orthanthera is a genus of plants in family Apocynaceae, first described as a genus in 1834. It is native to India and Africa.

1. Orthanthera albida Schinz - Namibia
2. Orthanthera butayei (De Wild.) Werderm. - Zaire
3. Orthanthera gossweileri C.Norman - Angola
4. Orthanthera jasminiflora (Decne.) N.E.Br. ex Schinz - South Africa
5. Orthanthera stricta Hiern - Angola
6. Orthanthera viminea Wight - Uttar Pradesh in India