Flora of North America species comparison

20-62 cm, erect or ascending.

50-100(110) cm, usually erect, sometimes decumbent at the base;

nodes 3-5, pubescent, puberulent, or glabrous;

internodes puberulent or 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.

and throats pilose or glabrous;

auricles absent;

ligules 0.5-1 mm, glabrous, truncate, erose;

blades 10-17 cm long, 5-10 mm wide, flat, with prow-shaped tips, both surfaces glabrous or pilose or only the adaxial surfaces pilose.

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

branches sometimes longer than the spikelets, curved to reflexed.

8-13 cm, open, drooping;

branches ascending to spreading, flexuous.

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

florets 7-15, bases concealed at maturity;

rachilla internodes concealed at maturity.

15-25 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 7-11 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.

pubescent, margins often hyaline;

lower glumes 5-7.5 mm, 3-veined;

upper glumes 6.5-8.5 mm, 5-veined;

lemmas 7-11 mm, elliptic to lanceolate, rounded over the midvein, backs more or less uniformly pilose or pubescent, margins densely long-pilose, apices acute to obtuse, entire;

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

anthers 1.5-2.5 mm.

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

= 14.

= 14.