Flora of North America species comparison

20-100 cm.

to 100 cm;

nodes hispid, hairs appressed.

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.

glabrous or pilose, margins ciliate distally;

ligules about 1 mm, ciliate;

blades 15-30 cm long, 4-7 mm wide, flat, scabrous or pubescent.

6-15 cm, tightly spikelike, pale green;

rachises scabrous or villous;

bristles usually solitary, 4-15 mm, ascending.

3-15 cm, densely spicate;

rachises rough hispid and sparsely villous;

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

2.2-2.8(3) mm, elliptical.

about 2 mm, turgid.

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.

1/3 – 1/2 as long as the spikelets, 3-5-veined;

upper glumes about 3/4 as long as the upper lemmas, 5-7-veined;

lower lemmas equaling the upper lemmas;

lower paleas 3/4 as long as the lower lemmas, hyaline;

upper lemmas very coarsely and transversely rugose;

upper paleas similar to the upper lemmas.

= 54, 68, 72.

= unknown.