Flora of North America species comparison

60-180 cm.

keeled, mostly glabrous, collars pubescent;

ligules to 0.5 mm, membranous, ciliate;

blades 3-10 mm wide, glabrous or sparsely hispid, apices attenuate and involute.

15-40 cm long, 3-5 cm wide, erect or nodding;

branches 10-15(25) cm, strongly divergent to drooping, stiff or lax, lower branches naked for 1/3 – 1/2 of their length;

pedicels 3-8 mm.

5-10 mm long, with 4-8 florets.

1.8-2 mm.

glumes 2.5-3 mm, often mucronate;

upper glumes 3.5-4 mm;

lemmas 3-5 mm, lateral veins puberulent or ciliate to well above midlength, midveins and lateral veins usually excurrent, midveins extending to 0.5 mm, lateral vein extensions shorter;

paleas as long as the lemmas, widened below;

anthers 1-1.5 mm.

= 40.