Barleria is a genus of plants in the family Acanthaceae. Some species include: * B. acanthoides Vahl * B. aculeata Balf.f. * B. albostellata C.B.Clarke, the Grey Barleria * B. cristata L., the Crested Philippine violet * B. greenii M.&K.Balkwill, Green's Barleria * B. lupulina Lindl., the Hop-headed Barleria or Snake bush * B. micans Nees * B. mysorensis B.Heyne ex Roth * B. observatrix Bosser & Heine * B. obtusa Nees, the Bush violet * B. opaca (Vahl) Nees * B. popovii Verdc. * B. pretoriensis C.B.Clarke * B. prionitis L., the Porcupine flower * B. repens Nees, the Small bush violet * B. rotundifolia Oberm. * B. siamensis Craib * B. strigosa Willd. * B. tetracantha Balf.f.