Flora of North America species comparison

5-90 cm, erect, slender, puberulent below the panicle.

90-150 cm, erect;

nodes 2-4, pubescent or puberulent;

internodes glabrous to pubescent, pilose to densely pubescent below the nodes.

usually densely and softly retrorsely pubescent to pilose, upper sheaths sometimes glabrous;

auricles absent;

ligules 2-3 mm, glabrous, obtuse, lacerate;

blades to 16 cm long, 1-6 mm wide, both surfaces softly hairy.

5-20 cm long, 3-8 cm wide, open, lax, drooping distally, usually 1-sided;

branches 1-4 cm, drooping, usually 1-sided and longer than the spikelets, usually at least 1 branch with 4-8 spikelets.

7-13.5 cm, open;

branches erect, ascending and appressed to slightly spreading.

10-20 mm, usually shorter than the panicle branches, sides parallel or diverging distally, moderately laterally compressed, often purplish-tinged, not densely crowded, with 4-8 florets.

20-40 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 3-9(11) florets.

villous, pubescent, or glabrous, margins hyaline;

lower glumes 4-9 mm, 1-veined;

upper glumes 7-13 mm, 3-5-veined;

lemmas 9-12 mm, lanceolate, glabrous or pubescent to pilose, 5-7-veined, rounded over the midvein, margins hyaline, often with some hairs longer than those on the backs, apices acuminate, hyaline, bifid, teeth 0.8-2(3) mm;

awns 10-18 mm, straight, arising 1.5 mm or more below the lemma apices;

anthers 0.5-1 mm.

usually glabrous, occasionally scabrous or pubescent;

lower glumes 5-9 mm, 1(3)-veined;

upper glumes 7-11 mm, 3(5)-veined, sometimes mucronate;

lemmas 9-16 mm, elliptic, rounded over the midvein, backs usually pubescent, sometimes glabrous or scabrous, margins pubescent or scabrous, apices obtuse, entire;

awns (4)5.5-8 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 3-5 mm.

sheaths sparingly to densely pilose, hairs 2-4 mm, occasionally glabrous;

upper sheaths hairy, hairs to 1 mm, collars glabrous or pilose, hairs to 4 mm;

auricles absent;

ligules 1-3 mm, usually glabrous, occasionally pilose, obtuse, erose;

blades 7-24 cm long, 3-12 mm wide, flat, usually glabrous, sometimes hairy.

= 14.

= 14.