Flora of North America species comparison

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

60-120 cm, erect or spreading;

nodes 4-6, pubescent or puberulent;

internodes mostly glabrous, sometimes pubescent to puberulent just 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.

glabrous or pilose, often pilose near the auricles;

auricles usually present on the lower leaves, rarely absent;

ligules to 1.5 mm, usually pubescent, sometimes glabrous, truncate to obtuse, laciniate, ciliolate;

blades 10-25 cm long, 3-9 mm wide, flat, glabrous, pilose on the margins or throughout.

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.

10-20 cm, open, usually nodding;

branches ascending to spreading or reflexed.

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.

15-35 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-10 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 pubescent, rarely glabrous, sometimes scabrous, margins often bronze-tinged;

lower glumes 4-7 mm, 3-veined;

upper glumes 6.5-9 mm, (3)5-veined;

lemmas 10-13 mm, elliptic to lanceolate, rounded over the midvein, backs usually pubescent, sometimes glabrous distally, margins often bronze-tinged, pubescent nearly throughout, apices acute to obtuse, entire, rarely slightly emarginate, lobes shorter than 1 mm;

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

anthers 3.5-5 mm.

= 14.

= 14.