Barleria crossandriformis

Barleria is a genus of plants in the family Acanthaceae. It includes 303 species native to the tropics and subtropics, including the Americas from Mexico to northern South America, sub-Saharan Africa, Egypt and the Arabian Peninsula, the Indian subcontinent, Indochina, southern China and Taiwan, parts of Malesia, and New Guinea. Some species include:

Barleria acanthoides Vahl Barleria aculeata Balf.f. Barleria albostellata C.B.Clarke, the grey barleria Barleria compacta Malombe & I.Darbysh. Barleria cristata L., the crested Philippine violet Barleria delamerei Barleria elegans S.Moore Barleria greenii M.&K.Balkwill, Green's barleria Barleria lupulina Lindl., the hop-headed barleria or snake bush Barleria mysorensis B.Heyne ex Roth Barleria observatrix Bosser & Heine Barleria obtusa Nees, the bush violet Barleria oenotheroides Dum.Cours. Barleria opaca (Vahl) Nees Barleria popovii Verdc. Barleria pretoriensis C.B.Clarke Barleria prionitis L., the porcupine flower Barleria repens Nees, the small bush violet Barleria rotundifolia Oberm. Barleria siamensis Craib Barleria strigosa Willd. Barleria tetracantha Balf.f.