Flora of North America species comparison

30-100 cm;

nodes pubescent, hairs appressed.

40-100 cm, erect, slender;

nodes glabrous.

with ciliate margins;

ligules ciliate;

blades to 12(25) cm long, to 10(20) mm wide, flat, hispid on both surfaces.

mostly glabrous, margins ciliate distally;

ligules 0.1-0.4 mm, of stiff hairs;

blades 15-40 cm long, 2-5 mm wide, those of the basal leaves involute, those of the cauline leaves flat, adaxial surfaces sparsely pilose basally.

3-18 cm, loosely spicate, interrupted, often purple;

rachises hispid;

bristles 1-3, 5-15 mm, flexible, antrorsely scabrous.

to 35 cm, nodding, slender, interrupted;

rachises scabridulous;

branches 5-20, erect, axes 0.4-3.2 cm, undulating, with 3-12 spikelets in 2 ranks, a single bristle present below the terminal spikelets;

bristles 3-6 mm.

1.5-2.2 mm.

1.8-2.2 mm, obovate, turgid.

about 1/3 as long as the spikelets, distinctly 3-veined, lateral veins coalescing with the central veins below the apices;

upper glumes nearly equaling the upper lemmas, obtuse, 5-veined;

lower lemmas equaling the upper lemmas;

lower paleas about 1/3 as long as the lower lemmas, narrow;

upper lemmas finely and transversely rugose;

upper paleas similar to the upper lemmas.

0.6-0.8 mm, about 1/3 as long as the spikelets, 3-veined;

upper glumes equaling the upper lemmas, 5-7-veined;

lower lemmas equaling the upper lemmas;

lower paleas absent;

upper lemmas finely and transversely rugose;

anthers 0.9-1.1 mm.

= unknown.

= unknown.