Oplonia

Oplonia is a genus of plants in the family Acanthaceae. It includes 21 species native to western South America (Peru, Bolivia, and northwestern Argentina), the Caribbean, and Madagascar.

Species
21 species are accepted.
 * Oplonia acicularis (Sw.) Stearn
 * Oplonia acuminata Stearn
 * Oplonia acunae Borhidi
 * Oplonia armata (Sw.) Stearn
 * Oplonia cubensis Borhidi
 * Oplonia grandiflora (Lindau) Stearn
 * Oplonia hutchisonii Wassh.
 * Oplonia jamaicensis (Lindau) Stearn
 * Oplonia jujuyensis Wassh. & C.Ezcurra
 * Oplonia linifolia (Benoist) Stearn
 * Oplonia microphylla (Lam.) Stearn
 * Oplonia minor (Benoist) Stearn
 * Oplonia moana Borhidi
 * Oplonia multigemma Borhidi
 * Oplonia nannophylla (Urb.) Stearn
 * Oplonia polyece (Stearn) Borhidi
 * Oplonia puberula Stearn
 * Oplonia purpurascens (Griseb.) Stearn
 * Oplonia spinosa (Jacq.) Raf.
 * Oplonia tetrasticha (C.Wright ex Griseb.) Stearn
 * Oplonia vincoides (Lam.) Stearn