Flora of North America species comparison

60-131 cm, glabrous or pubescent.

often pubescent;

collars usually pubescent;

auricles pubescent;

ligules 0.5-1.8 mm;

blades 25-51 cm long, 7-20 mm wide, glabrous or scabridulous on both surfaces, margins scabridulous or ciliate.

9-30 cm, with 4-23 spikelets.

10-20 mm, oblong to elliptic, with (2)4-5(7) florets.

green to stramineous;

lower glumes 1.7-4.2 mm long, 0.3-0.7 mm wide in profile, (1)3(5)-veined;

upper glumes 2.8-6.4 mm long, 0.6-1.2 mm wide in profile, (3)5-veined;

calluses pubescent on all but the lowest mature lemma;

lemmas (3.8)5.3-10.8 mm, widest below the middle, lanceolate in profile, tapering gradually, apices sharply cuspidate;

paleas glabrous or scabridulous, apices usually bifid, sinuses to 0.7 mm deep;

anthers (1.7)2-2.9(3.5) mm.

4.6-5.8 mm long, 1.3-1.8 mm wide, narrowly lanceolate in outline, gradually tapering to a blunt beak, wrinkled or smooth, usually blackish-brown to black, except for the straw-colored beak, rarely orange-brown.

= unknown.