Flora of North America species comparison

60-120 cm, erect or spreading;

nodes (3)4-6(7), usually pilose;

internodes glabrous.

80-150 cm, erect;

nodes 9-20, glabrous, usually concealed by the leaf sheaths;

internodes usually glabrous, sometimes hairy just below the nodes.

pilose or glabrous;

auricles absent;

ligules 2-6 mm, glabrous, obtuse or truncate, erose or lacerate;

blades 13-25(33) cm long, to 14 mm wide, flat, abaxial surfaces usually glabrous, sometimes pilose, adaxial surfaces usually pilose, sometimes glabrous.

overlapping, densely to moderately retrorsely pilose or glabrous over most of their surface, throats and collars densely pilose;

auricles 1-2.5 mm on most lower leaves;

ligules 0.8-1.4 mm, hirsute, ciliate, truncate, erose;

blades 20-30 cm long, 5-15 mm wide, flat, usually glabrous, rarely pilose, with 2 prominent flanges at the collar.

10-15 cm, open;

branches ascending to drooping.

10-22 cm, open, nodding;

branches spreading to ascending.

15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with (3)4-9 florets.

15-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-9 florets.

glabrous or pilose;

lower glumes 5-8 mm, 1(3)-veined;

upper glumes 8-12 mm, 3-veined;

lemmas 8-15 mm, lanceolate, rounded over the midvein, backs sparsely hairy or glabrous, margins usually coarsely pubescent, sometimes glabrous, apices subulate to acute, entire;

awns (4)6-12 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 2-4 mm.

pubescent or glabrous;

lower glumes 4-7.5 mm, 1(3)-veined;

upper glumes 6-9 mm, 3-veined, sometimes mucronate;

lemmas 8-14 mm, elliptic to lanceolate, rounded over the midvein, backs glabrous or pilose to pubescent, margins long-pilose, apices obtuse to acute, entire;

awns 3-4.5(7) mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 2-3 mm.

= 14.

= 14.