Flora of North America species comparison

20-90 cm, erect or decumbent, 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.

softly pilose, hairs often retrorse or spreading;

auricles absent;

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

blades 3.5-27 cm long, 1-9 mm wide, both surfaces pilose.

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.

13-25 cm long, 2-12 cm wide, erect to spreading;

branches 1-7 cm, stiffly erect to ascending or spreading, with 1 or 2 spikelets.

10-20 cm, open, usually nodding;

branches ascending to spreading or reflexed.

25-70 mm, sides parallel or diverging distally, moderately laterally compressed, with 4-11 florets.

15-35 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-10 florets.

smooth or scabrous, margins hyaline;

lower glumes 15-25 mm, 1-3-veined;

upper glumes 20-35 mm, 3-5-veined;

lemmas 20-35 mm, linear-lanceolate, scabrous, 7-veined, rounded over the midvein, margins hyaline, apices bifid, acuminate, teeth 3-5 mm;

awns 30-65 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.

= 42, 56.

= 14.