Flora of North America species comparison

20-62 cm, erect or ascending.

35-100 cm, erect or geniculate near the base, glabrous.

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.

densely pubescent;

auricles absent;

ligules 2-2.5 mm, glabrous, acute, lacerate;

blades 4-20 cm long, 1-6 mm wide, pubescent on both surfaces.

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

branches sometimes longer than the spikelets, curved to reflexed.

10-20 cm long, 5-12 cm wide, open;

branches 2-10 cm, spreading, ascending or drooping, rarely with more than 3 spikelets.

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

florets 7-15, bases concealed at maturity;

rachilla internodes concealed at maturity.

20-35 mm, usually shorter than the panicle branches, sides parallel or diverging distally, moderately laterally compressed, with 5-9 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.

smooth or scabrous, margins hyaline;

lower glumes 6-14 mm, 1(3)-veined;

upper glumes 10-20 mm, 3(5)-veined;

lemmas 14-20 mm, narrowly lanceolate, pubescent or puberulent, 7(9)-veined, rounded over the midvein, margins hyaline, apices acuminate, bifid, teeth 1-3 mm;

awns 15-30 mm, straight, arising 1.5 mm or more below the lemma apices;

anthers 1-1.4 mm.

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

= 14.

= 14,28.