Flora of North America species comparison

60-170 cm, erect;

nodes (5)6-8, pubescent;

internodes usually glabrous, sometimes pubescent near the nodes.

20-40 cm, erect to ascending.

pilose, midrib of the culm leaves not abruptly narrowed just below the collar;

auricles absent;

ligules 2-4 mm, glabrous, truncate, erose or lacerate;

blades 20-35(37) mm long, 6-16 mm wide, flat, abaxial surfaces glabrous, adaxial surfaces pilose.

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.

10-25 cm, open, nodding;

branches ascending, spreading, or drooping.

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

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

20-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (4)6-10 florets.

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

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

rachilla internodes concealed at maturity.

pubescent;

lower glumes 6-8.5 mm, 1(3)-veined;

upper glumes 8-11.5 mm, 3-veined, not mucronate;

lemmas 10-12 mm, lanceolate, rounded over the midvein, backs pubescent, margins more densely so, apices acute, entire;

awns 3.5-7 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 2-4 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.

= 28.

= unknown.