Flora of North America species comparison

30-60 cm, slender.

20-40 cm, erect to ascending.

pilose-pubescent to nearly glabrous;

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

densely retorsely pilose;

ligules 1.5-2.5 mm, glabrous or pilose, obtuse, lacerate;

blades 7-8 cm long, 3-6 mm wide, pilose on both surfaces.

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

branches appressed to spreading, sometimes flexuous.

(4)10-15 cm long, 4-7 cm wide, open, nodding;

branches sometimes longer than the spikelets, spreading or ascending, sinuous.

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

10-20 mm, lanceolate, terete to moderately laterally compressed;

florets 5-9(11), bases concealed at maturity;

rachilla internodes concealed at maturity.

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.

densely pilose;

lower glumes 7-10 mm, 3-veined;

upper glumes 8-12 mm, (5)7-veined;

lemmas 9-11(13) mm long, 1-1.8 mm wide, lanceolate, densely pilose, distinctly 7-veined, rounded over the midvein, margins rounded, not inrolled at maturity, apices acute, bifid, teeth shorter than 1 mm;

awns 10-16 mm, straight to weakly spreading, arising 1.5 mm or more below the lemma apices;

anthers 0.7-1 mm.

equaling or shorter than the paleas, thin, weakly inrolled.

= unknown.

= unknown.