Dissanthelium

Dissanthelium is a genus of plants in the grass family. It is native to the Americas, especially in the Andes of South America.
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.
; SpeciesDissanthelium amplivaginatum - Ancash in PeruDissanthelium breve - Peru, BoliviaDissanthelium brevifolium - PeruDissanthelium californicum - California, †Baja California Dissanthelium calycinum - Peru, Bolivia, MexicoDissanthelium giganteum - PeruDissanthelium laxifolium Swallen & Tovar - Peru, BoliviaDissanthelium longifolium Tovar - Huánuco in PeruDissanthelium longiligulatum Swallen & Tovar - La Paz in BoliviaDissanthelium macusaniense R.C.Foster & L.B.Sm. - Peru, Bolivia, ArgentinaDissanthelium peruvianum - Peru, Bolivia, Argentina, ChileDissanthelium pygmaeum - Huancavelica in PeruDissanthelium rauhii - PeruDissanthelium trollii - La Paz in Bolivia, eastern Peru
; formerly included
see PoaDissanthelium atropidiforme - Poa atropidiformis