Flora of North America species comparison

10-150 cm, slender, wiry, erect at first, ultimately decumbent, sprawling, glabrous, often with purple dots and streaks, branching extensively at the base, rooting at the lower nodes.

50-100 cm, erect, solitary or in small tufts from stout, scaly, creeping to vertical rhizomes or stolons, simple or branching at the base;

nodes densely villous.

often shorter than the internodes, loose, glabrous, margins short-ciliate;

ligules 0.2-0.5 mm, membranous, erose, ciliate;

blades 5-20 cm long, 3-10 mm wide, thin, flat, glabrous on both surfaces, margins scabridulous, apices long-acuminate.

densely villous;

ligules membranous, ciliate, hairs 1.5-2 mm;

blades 20-60 cm long, 4-10 mm wide, ascending to spreading, strigose to subglabrous, flat basally, tapering to a long, involute point.

5-30 cm, nearly as wide as long;

branches few, capillary, with a few spikelets distally;

pedicels 0.5-10 mm.

20-30 cm long, 3-9 cm wide, narrow, shortly exserted;

branches slender, ascending;

secondary branches and pedicels 1-4 mm, crowded, ascending to appressed.

1.7-2.2 mm long, about 1 mm wide, ellipsoid or obovoid, glabrous, faintly veined, subacute or obtuse at the apices.

5-7 mm, densely villous, hairs silvery or tawny-white.

0.3-0.8 mm, reduced, acute;

upper glumes and lower lemmas subequal or the glumes shorter, distinctly verrucose, with hemispheric warts;

upper florets 1.6-2 mm long, about 1 mm wide, grayish-brown, dull, minutely papillose, acute.

about 3/4 the length of the spikelets, 7-11-veined;

upper glumes and lower lemmas 7-15-veined;

lower florets staminate;

lower paleas about as long as the lower lemmas;

upper florets striate, margins of the upper lemmas villous, hairs white;

lodicules very large.

= 36.

= 36.