Flora of North America species comparison

60-170 cm, erect;

nodes (5)6-8, pubescent;

internodes usually glabrous, sometimes pubescent near the nodes.

30-70 cm, erect or spreading;

nodes 3-5, pubescent.

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 pubescent to pilose;

auricles absent;

ligules 2-3 mm, lanceolate, pubescent, obtuse, erose;

blades 7-20 cm long, 3-7 mm wide, flat, usually pubescent to pilose, rarely glabrous.

10-25 cm, open, nodding;

branches ascending, spreading, or drooping.

8-15 cm, open, drooping;

branches ascending to spreading.

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

20-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-7 florets.

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.

glabrous or hispidulous;

lower glumes 6-9 mm, 1-veined;

upper glumes 8-10.5 mm, 3-veined, usually acute, rarely mucronate;

lemmas 9-15 mm, lanceolate, rounded over the midvein, glabrous, sometimes scabrous, apices subulate to acute, entire;

awns 4-8 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 3-5 mm.

= 28.

= 28.