Holarrhena

Holarrhena is a genus of plant in the family Apocynaceae first described as a genus in 1810. It is native to tropical and southern Africa as well as south, east, and southeast Asia. the World Checklist of Selected Plant Families recognises 5 species:
;Species

Holarrhena congolensis Stapf - Zaïre
Holarrhena curtisii King & Gamble - Indochina
Holarrhena floribunda T.Durand & Schinz - western + central Africa
Holarrhena mitis R.Br. ex Roem. & Schult. - Sri Lanka
Holarrhena pubescens Wall. - eastern, southern + central Africa; Indian Subcontinent, Indochina, parts of China

A new species of Holarrhena from the Palakkad gap of Western Ghats has been reported and named as Holarrhena parishadii in the year 2024.