Flora of North America species comparison

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

40-90 cm, erect;

nodes 3-5(7), mainly pubescent;

internodes mostly glabrous, puberulent near 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.

10-25 cm, open, nodding;

branches ascending to 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.

10-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 7-12(16) 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, sometimes pubescent;

lower glumes 5-6.5(7) mm, 1(3)-veined;

upper glumes (6)7-9 mm, 3-veined, not mucronate;

lemmas 8-11 mm, elliptic, rounded over the midvein, backs and margins pubescent, sometimes nearly glabrous, apices truncate or obtuse, entire, rarely emarginate, lobes shorter than 1 mm;

awns 2-4 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 1.8-4 mm.

sheaths densely pilose or glabrous;

upper sheaths glabrous or almost so, midrib of the culm leaves not abruptly narrowed just below the collar;

auricles absent;

ligules 1-2 mm, glabrous, truncate or obtuse, sometimes lacerate;

blades 5-20 cm long, to 7 mm wide, flat, both surfaces glabrous, sometimes scabrous.

= 14.

= 28.