Schizachyrium

See also Andropogon (Andropogon has its racemes paired vs. racemes single in our species of Schizachyrium)

1. Lemmas cleft ½ their length; awn on sessile spikelet 8-15 mm…S. scoparium

1. Lemmas cleft 2/3 their length or shallower; awn on sessile spikelet 15-25 mm…S. sanguineum