Piptochaetium
Piptochaetium, or speargrass, is a genus of New World 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, 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
see Nassella Stipa
