Barjonia is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1844.Decaisne, Joseph. 1844. Prodromus Systematis Naturalis Regni Vegetabilis 8: 512 in Latin They are native to South America.Forzza, R. C. 2010. Lista de espécies Flora do Brasil Jardim Botânico do Rio de Janeiro, Rio de JaneiroWood, J. R. I., F. Mamani M., P. Pozo, J. D. Soto & D. Villarroel Segarra. (eds.) 2011. Guía Darwin de las plantas de los cerrados de la Chiquitania 1–212. Museo de Historia Natural Noel Kempff Mercado, Santa Cruz, Bolivia.
SpeciesThe Plant List, genus Hemipogon
formerly included transferred to Hemipogon, Minaria
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