Piptochaetium, or speargrass, is a genus of plants in the grass family, native to North and South America. Piptochaetium is a bunchgrass genus in the tribe Stipeae.
Some of its species have been included in the genus Stipa by some authors.
Species
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