(Bouteloua rigidiseta)
Tufted, slender, weak culms. Culms: numerous, 15-40 cm tall, densely clustered in small clumps. Blades: Narrow, flat, 4-12 cm long x 1-2 mm broad. Inflorescence: Wedge-shaped spikelets .8-1.6 mm long with 3-5 spreading spikelets.