Flora of North America species comparison

20-62 cm, erect or ascending.

60-120 cm, erect or spreading;

nodes 4-6, pubescent or puberulent;

internodes mostly glabrous, sometimes pubescent to puberulent just below the nodes.

densely pilose;

ligules 0.5-2 mm, hairy, obtuse, erose;

blades 3-13 cm long, 2-4 mm wide, pilose to pubescent on both surfaces.

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.

5-15 cm long, 3-7 cm wide, open, secund, nodding;

branches sometimes longer than the spikelets, curved to reflexed.

10-20 cm, open, usually nodding;

branches ascending to spreading or reflexed.

15-27 mm long, 8-12 mm wide, ovate, laterally compressed;

florets 7-15, bases concealed at maturity;

rachilla internodes concealed at maturity.

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

smooth or scabridulous;

lower glumes 5-6 mm, 3-5-veined;

upper glumes 6-8 mm, 7-9-veined;

lemmas 9-10 mm long, 6-8 mm wide, inflated, obovate or rhombic, coriaceous, smooth or scabridulous, obscurely 9-veined, rounded over the midvein, margins hyaline, 1-1.3 mm wide, abruptly angled, not inrolled at maturity, apices acute to obtuse, bifid, teeth shorter than 1 mm;

awns usually absent, sometimes to 1 mm, arising less than 1.5 mm below the lemma apices;

anthers 0.7-1 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.

equaling or shorter than the paleas, thin, weakly inrolled or flat.

= 14.

= 14.