Dissanthelium is a genus of plants in the grass family. It is native to the Americas, especially in the Andes of South America.Trinius, Carl Bernhard von. 1836. Linnaea 10(3): 305. in LatinJepson Manual TreatmentUSDA Plants ProfileGrass Manual Treatment
The only species native to the United States, D. californicum, was thought to be extinct until a single population was discovered on Santa Catalina Island, California, in 2005.Craig Dremann. 2005. A Botanical Treasure Hunt to rediscover the formerly "extinct" grass, Dissanthelium californicum, on San Clemente Island.
Species Dissanthelium amplivaginatum - Ancash in Peru Dissanthelium breve - Peru, Bolivia Dissanthelium brevifolium - Peru Dissanthelium californicum - California (Santa Catalina I, †San Clemente I), †Baja California (†Guadalupe I) Dissanthelium calycinum - Peru, Bolivia, Mexico Dissanthelium giganteum - Peru Dissanthelium laxifolium Swallen & Tovar - Peru, Bolivia Dissanthelium longifolium Tovar - Huánuco in Peru Dissanthelium longiligulatum Swallen & Tovar - La Paz in Bolivia Dissanthelium macusaniense (E.H.L.Krause) R.C.Foster & L.B.Sm. - Peru, Bolivia, Argentina Dissanthelium peruvianum - Peru, Bolivia, Argentina, Chile Dissanthelium pygmaeum - Huancavelica in Peru Dissanthelium rauhii - Peru Dissanthelium trollii - La Paz in Bolivia, eastern Peru
formerly included see Poa Dissanthelium atropidiforme - Poa atropidiformis Dissanthelium patagonicum - Poa atropidiformis
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