Flora of North America species comparison

20-100 cm.

50-200 cm;

nodes pubescent.

compressed, glabrous, margins villous distally;

ligules 1-2.5 mm, ciliate;

blades 8-25 cm long, 2-5 mm wide, flat or folded, scabrous on both surfaces.

with ciliate margins distally;

ligules about 1 mm, ciliate;

blades 10-25 mm wide, plicate, both surfaces scabrous, adaxial surfaces with parallel rows of papillose-based hairs.

6-15 cm, tightly spikelike, pale green;

rachises scabrous or villous;

bristles usually solitary, 4-15 mm, ascending.

to 20 cm, open;

branches 2-4 cm, axes villous;

bristles solitary, usually only present below the terminal spikelet on each branch, occasionally below non-terminal spikelets, 5-8 mm, flexible.

2.2-2.8(3) mm, elliptical.

2.5-3 mm.

about 1/2 as long as the spikelets, 3-veined;

upper glumes from 3/4 as long as to equaling the florets, 5-veined;

lower lemmas equaling the upper lemmas, 5-veined;

lower paleas 1/2 - 3/4 as long as the upper paleas, lanceolate;

upper lemmas apiculate, finely and transversely rugose;

upper paleas similar.

about 1 mm, orbicular, 3-5-veined;

upper glumes about 2 mm, ovate, 7-veined;

lower lemmas about 2.5 mm, slightly coriaceous, acute;

lower paleas about equaling the lower lemmas in length and width;

upper lemmas about 2.3 mm, strongly transversely rugose;

upper paleas enclosed.

= 54, 68, 72.

= 54, 56.