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

formerly included

see Nassella Stipa

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