Flora of North America species comparison

60-170 cm, erect;

nodes (5)6-8, pubescent;

internodes usually glabrous, sometimes pubescent near the nodes.

70-180 cm, erect;

nodes 3-7, pubescent or puberulent;

internodes pubescent, puberulent, or glabrous.

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, hairs to 1 mm, collars with hairs to 2 mm, midrib of the culm leaves not abruptly narrowed just below the collar;

auricles sometimes present;

ligules 1-3 mm, densely pubescent to pilose, obtuse, lacerate;

blades (13)18-38 cm long, 3-12 mm wide, flat, sparsely to densely pubescent on both surfaces.

10-25 cm, open, nodding;

branches ascending, spreading, or drooping.

14-27 cm long, very open, nodding;

branches flexuous, usually widely spreading, with spikelets near the tips.

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

20-37(45) mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-9(10) 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.

pubescent, with prominent veins, margins not bronze-tinged;

lower glumes 4-8.5 mm, (1)3-veined;

upper glumes 7-10 mm, 3(5)-veined, not mucronate;

lemmas 9.5-14 mm, lanceolate, rounded over the midvein, backs pilose, pubescent, or glabrous, margins pilose, not bronze-tinged, apices subulate to acute, entire;

awns 3-7 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 3-6 mm.

= 28.

= 14.