Flora of North America species comparison

30-60 cm, slender.

10-40 cm, erect or ascending, often puberulent below the panicle.

pilose-pubescent to nearly glabrous;

blades 7-28 cm long, 2-9 mm wide, pilose or glabrous.

softly pubescent to pilose;

auricles absent;

ligules 1-3(4) mm, pubescent, obtuse, lacerate;

blades to 15 cm long, 1-5 mm wide, flat, pubescent on both surfaces.

10-20 cm long, 3-9 cm wide, erect, dense;

branches appressed to spreading, sometimes flexuous.

2-10 cm long, 2-5 cm wide, erect, dense, often reddish brown;

branches 0.1-1 cm, ascending, never drooping, not readily visible, with 1 or 2 spikelets.

15-20 mm, elliptic to lanceolate, more or less terete, with 3-9 florets.

18-25 mm, much longer than the panicle branches, densely crowded, subsessile, with parallel sides or widening distally, moderately laterally compressed, with 4-8 florets.

glabrous, acuminate;

lower glumes 8-10 mm, 1-veined;

upper glumes 12-16 mm, 3(5)-veined;

lemmas 11-14 mm, lanceolate to linear-lanceolate, sparsely pubescent, 5-veined, rounded over the midvein, apices acuminate, bifid, teeth 2-3 mm, usually aristate, sometimes acuminate;

awns 13-20 mm, geniculate, strongly to moderately twisted in the basal portion, arising 1.5 mm or more below the lemma apices;

anthers 2-2.5 mm.

pilose, margins hyaline;

lower glumes 5-8 mm, 1(3)-veined;

upper glumes 8-12 mm, 3-5-veined;

lemmas 10-15 mm, linear-lanceolate, pubescent to pilose, 7-veined.

over the midvein, margins hyaline, apices acuminate, teeth 1-3 mm;

awns 8-20 mm, straight, reddish, arising 1.5 mm or more below the lemma apices;

anthers 0.5-1 mm.

= unknown.

= 14, 28.