Piptochaetium, or speargrass,[3] is a genus of plants in the grass family, native to North and South America. Piptochaetium is a bunchgrass genus in the tribe Stipeae.[4][5][6][7][8]
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Some of its species have been included in the genus Stipa by some authors.[9][10]
- Species[2][11][12][13][14][15]
- Piptochaetium alpinum - Santa Catarina, Rio Grande do Sul
- Piptochaetium angolense - Coquimbo
- Piptochaetium angustifolium - Coahuila, Tamaulipas, Nuevo León, México State
- Piptochaetium avenaceum — black oatgrass, blackseed needlegrass - United States (Texas to Florida north to Massachusetts + Michigan), Ontario, Tamaulipas, Nuevo León
- Piptochaetium avenacioides - Florida speargrass - Florida
- Piptochaetium bicolor - Rio Grande do Sul, Argentina, Uruguay, Chile incl Juan Fernández Islands
- Piptochaetium brachyspermum - Buenos Aires
- Piptochaetium brevicalyx - central + eastern Mexico
- Piptochaetium burkartianum - Corrientes
- Piptochaetium cabrerae - Buenos Aires
- Piptochaetium calvescens - Buenos Aires, Uruguay
- Piptochaetium confusum - Uruguay, Rio Grande do Sul, Entre Rios
- Piptochaetium cucullatum - Uruguay
- Piptochaetium featherstonei - Peru, Bolivia
- Piptochaetium fimbriatum - pinyon ricegrass - Arizona, Texas, New Mexico, Mexico, Guatemala
- Piptochaetium hackelii - Argentina, Uruguay
- Piptochaetium hirtum - Chile
- Piptochaetium indutum - Ecuador, Peru, Bolivia, Salta, Jujuy
- Piptochaetium jubatum - Uruguay
- Piptochaetium lasianthum - Uruguay, Argentina, Santa Catarina, Rio Grande do Sul
- Piptochaetium leiopodum - Buenos Aires, Uruguay
- Piptochaetium medium - Uruguay, Argentina, Brazil, Venezuela
- Piptochaetium montevidense - Uruguayan ricegrass - Argentina, Chile, Uruguay, Brazil, Paraguay, Bolivia, Peru, Ecuador, Venezuela
- Piptochaetium napostaense - Argentina
- Piptochaetium palustre - Santa Catarina
- Piptochaetium panicoides - Argentina, Chile, Uruguay, Brazil, Colombia, Bolivia, Peru, Ecuador, Venezuela
- Piptochaetium pringlei - Pringle's speargrass - Arizona, Texas, New Mexico, Mexico
- Piptochaetium ruprechtianum - Uruguay, Argentina, Brazil
- Piptochaetium sagasteguii - Peru
- Piptochaetium seleri - Mexico, Guatemala
- Piptochaetium setosum - bristly speargrass - Chile
- Piptochaetium stipoides - purple speargrass - Argentina, Chile, Uruguay, Brazil, Colombia; naturalized in Mexico, California
- Piptochaetium tovarii - Peru
- Piptochaetium uruguense - Argentina, Uruguay, Santa Catarina, Rio Grande do Sul, Paraguay, San Luis Potosí
- Piptochaetium virescens - Mexico, Guatemala
- formerly included[2]
see Nassella Stipa
- Piptochaetium collinum - Nassella laevissima
- Piptochaetium gibbum - Nassella gibba
- Piptochaetium laeve - Nassella pubiflora
- Piptochaetium laevissimum - Nassella laevissima
- Piptochaetium mexicanum - Nassella mexicana
- Piptochaetium mucronatum - Nassella mucronata
- Piptochaetium ovatum - Stipa ovata
- Piptochaetium trichotomum - Nassella trichotoma
Clayton, W. D., et al. (2006 onwards). Piptochaetium. GrassBase - The Online World Grass Flora. Mujica-Salles, J. & M. Marchi. 1993. Caracteres de valor taxonómico en el género Piptochaetium Presl (Poaceae-stipeae) y su relacion con la distribución de las especies brasileras. Candollea 48(1): 1–13
Cialdella, A. M. & M. Arriaga. 1998. Revisión de las especies Sudamericanas del género Piptochaetium (Poaceae, Pooideae, Stipeae). Darwiniana 36(1–4): 107–157
Swallen, J. R. 1955. Gramineae. In: P. C. Standley & J. A. Steyermark (eds.), Flora of Guatemala—Part II. Fieldiana, Botany 24(2): i–ix, 1–390
Skottsberg, C. 1951. A supplement to the pteridophytes and phanerogams of Juan Fernandez and Easter Island. 2(28): 763–792. In C. J. F. Skottsberg, Natural History of Juan Fernandez and Easter Island. Almquist & Wiksells, Uppsala
Gould, F. W. & R. Moran. 1981. The grasses of Baja California, Mexico. Memoir San Diego Society of Natural History 12: 1–140
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