Perennial herbs or subshrubs. Leaves sessile; 3-veined. Inflorescences axillary clusters. Flowers subsessile, 5-merous; calyx campanulate, calyx lobes 5 in outer flowers of cluster, or reduced to 4 or 3 in inner flowers of cluster; corolla tubular to salver-shaped, regularly 5-lobed; stamens 5, base of filaments broadened and with scale-like appendage, small triangular lobe alternates with filaments, anthers oblongoid, connective apiculate; pollen in monads; stigma capitate. Fruit a capsule with persistent calyx and corolla; seeds angular, foveolate.


Africa: present Madagascar: present Pantropical: present tropical America: present tropical Asia: present
A pantropical genus with 3 species, of which 1 occurs in tropical Asia and Africa, 1 in Madagascar and 1 in tropical America.


Enicostema Blume in Bijdr. Fl. Nederl. Indië 14: 848. 1826 sec. by Marion J. Jansen-Jacobs. - Enicostema in JEANETTE ALLOGIO, LAURA COBB, JASON R. GRANT, MARION J. JANSEN-JACOBS, MATT KINKADE, KATHERINE B. LEPIS, HILTJE MAAS-VAN DE KAMER, PAUL J.M. MAAS, MATTHEW I. PALMER & S. MOTA DE OLIVEIRA, FLORA OF THE GUIANAS, Series A: Phanerogams Fascicle 30 139. GENTIANACEAE. 2012