Flora of North America species comparison

60-170 cm, erect;

nodes (5)6-8, pubescent;

internodes usually glabrous, sometimes pubescent near the nodes.

40-90 cm, erect;

nodes (3)4-7(8), these and the internodes pubescent 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.

glabrous or pilose, midrib of the culm leaves abruptly narrowed just below the collar;

auricles often present on the lower leaves;

ligules to 1 mm, truncate;

blades 14-22(26) cm long, to 6 mm wide, flat, glabrous or pilose, not glaucous.

10-25 cm, open, nodding;

branches ascending, spreading, or drooping.

10-20 cm, open, nodding;

branches ascending or spreading.

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

(14)15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-12 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.

usually pubescent, rarely glabrous;

lower glumes 5-6 mm, 1-3-veined;

upper glumes 6-8 mm, 3-veined, sometimes mucronate;

lemmas 7-10 mm, elliptic to lanceolate, rounded over the midvein, backs and margins pubescent, apices acute to obtuse, entire;

awns 1-3(5) mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 2-4 mm.

= 28.

= 14.