Helictotrichon
Helictotrichon, or alpine oatgrass, is a genus of perennial flowering plants in the grass family. The genus name comes from the Greek heliktos meaning twisted, and trichos meaning hair, referring to the shape of the awn.
Most of the species are native to Africa and Eurasia with a few species in North America. Helictotrichon sempervirens is widely cultivated as an ornamental.
; Species
- Helictotrichon altius Ohwi - China
- Helictotrichon angustum C.E.Hubb. - Kenya, Yemen
- Helictotrichon arctum Cope - Yemen
- Helictotrichon barbatum Schweick. - South Africa
- Helictotrichon burmanicum Bor - Myanmar
- Helictotrichon cantabricum Gervais - Pyrenees in France + Spain
- Helictotrichon capense Schweick. - South Africa
- Helictotrichon convolutum Henrard - Italy, Greece, Balkans, Turkey, Syria, Lebanon
- Helictotrichon cycladum Rech.f. - Greece incl Crete
- Helictotrichon decorum Henrard - Romania
- Helictotrichon delavayi Henrard - China
- Helictotrichon desertorum Nevski - Austria, Czech Rep, Ukraine, Russia, Kazakhstan, Kyrgyzstan, Mongolia
- Helictotrichon devesae Romero Zarco - Spain
- Helictotrichon dodii Schweick. - South Africa
- Helictotrichon elongatum C.E.Hubb. - Madagascar; Africa from Chad to Eritrea to Zimbabwe
- Helictotrichon fedtschenkoi Henrard - Kyrgyzstan, Tajikistan
- Helictotrichon filifolium Henrard - Spain, Morocco, Algeria
- Helictotrichon galpinii Schweick. - South Africa, Lesotho
- Helictotrichon hideoi Ohwi - Japan, Taiwan
- Helictotrichon hirtulum Schweick. - South Africa, Lesotho
- Helictotrichon hissaricum Henrard - Tajikistan
- Helictotrichon imberbe Veldkamp - South Africa, Lesotho, Eswatini
- Helictotrichon junghuhnii Henrard - China, Indian Subcontinent, Myanmar, Sumatra, Java, New Guinea
- Helictotrichon × krischae H.Melzer - Austria
- Helictotrichon krylovii Henrard - Yakutia, Magadan
- Helictotrichon lachnanthum C.E.Hubb. - Bioko, Ethiopia, Tanzania, Kenya, Uganda
- Helictotrichon leianthum Ohwi - China
- Helictotrichon leoninum Schweick. - South Africa
- Helictotrichon longifolium Schweick. - South Africa, Lesotho
- Helictotrichon longum Schweick. - South Africa
- Helictotrichon macrostachyum Henrard - Algeria
- Helictotrichon mannii C.E.Hubb. - Bioko, Cameroon
- Helictotrichon milanjianum C.E.Hubb. - Madagascar, East Africa
- Helictotrichon mongolicum Henrard - Siberia, Mongolia, Xinjiang, Kazakhstan
- Helictotrichon mortonianum Henrard - USA
- Helictotrichon murcicum Holub - Spain
- Helictotrichon namaquense Schweick. - South Africa
- Helictotrichon natalense Schweick. - South Africa
- Helictotrichon newtonii C.E.Hubb. - Angola
- Helictotrichon parlatorei Pilg. - Alps of France, Italy, Switzerland, Austria, Slovenia
- Helictotrichon petzense H.Melzer - Alps of Austria, Slovenia
- Helictotrichon planifolium Holub - Pyrenees in France + Spain
- Helictotrichon polyneurum Henrard - Tamil Nadu
- Helictotrichon potaninii Tzvelev - Sichuan
- Helictotrichon quinquesetum Schweick. - South Africa
- Helictotrichon requienii Henrard - France + Spain
- Helictotrichon rogerellisii Mashau, Fish & A.E.van Wyk - South Africa
- Helictotrichon roggeveldense Mashau, Fish & A.E.van Wyk - South Africa
- Helictotrichon sangilense Krasnob. - Tuva in Siberia
- Helictotrichon sarracenorum Holub - Spain
- Helictotrichon schmidii Henrard - India, China
- Helictotrichon sedenense Holub - France, Spain, Italy, Morocco
- Helictotrichon sempervirens Pilg. - Blue [oat grass] - France, Italy
- Helictotrichon setaceum Henrard - France, Italy
- Helictotrichon sumatrense Ohwi - Sumatra
- Helictotrichon tianschanicum Henrard - Kyrgyzstan, Tajikistan, Kazakhstan, Xinjiang
- Helictotrichon tibeticum Holub - China incl Tibet + Xinjiang
- Helictotrichon turcomanicum Czopanov - Turkmenistan
- Helictotrichon umbrosum C.E.Hubb. - Ethiopia, Sudan, South Sudan, Kenya, Uganda, Tanzania
- Helictotrichon uniyalii Kandwal & B.K.Gupta - Uttarakhand
- Helictotrichon yunnanense S.Wang & B.S.Sun - Yunnan
Many species once considered part of Helictotrichon are now regarded as better suited to other genera. A large number are now in Helictochloa with smaller numbers of species in Amphibromus, Arrhenatherum, Avenula, Danthoniastrum, Duthiea, Tricholemma, and Trisetum.