Flora of North America species comparison

15-40 cm, slender, usually erect, occasionally decumbent, often tightly clustered into hemispheric clumps, unbranched.

mostly basal;

sheaths longer than the internodes, glabrous except at the summit;

collars densely pilose;

ligules 0.5-1 mm;

blades 5-20 cm long, 1-2 mm wide, flat to loosely involute, glabrous.

paniculate, 8-18 cm long, 4-12 cm wide, peduncles often flattened and easily broken;

rachis nodes glabrous or with straight, less than 0.3 mm hairs;

primary branches 2-6 cm, stiffly divaricate to reflexed, with axillary pulvini, usually naked on the lower 1/2 secondary branches usually absent.

usually divergent, pedicels usually with axillary pulvini.

8-12 mm, 1-veined, acuminate or awned, awns to 4 mm;

calluses about 0.5 mm;

lemmas 8-13 mm long, glabrous, smooth or scabrous, terminal 2-3 mm straight or with 1-2 twists, narrowing to 0.1-0.2 mm wide, junction with the awns not evident;

awns (7)10-22 mm, not disarticulating at maturity, from almost straight to somewhat curved basally, ascending to divergent distally;

lateral awns slightly shorter and thinner than the central awns;

anthers 3, 0.8-1 mm.

8-10 mm, light brown.

= 22.