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.

(6)25-100 cm, 0.5-3.5 mm thick, spreading to weakly ascending, usually freely branching;

nodes pilose, hairs spreading to ascending;

internodes pilose, with papillose-based hairs, or sparsely hispid.

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.

rounded, glabrous, margins shortly ciliate distally;

ligules 0.6-4 mm, of hairs;

blades (3)6-15 cm long, 1-5 mm wide, spreading, abaxial surfaces sparsely hirsute, adaxial surfaces more densely so, hairs papillose-based, midribs prominent and not white, margins involute, bases cuneate, apices subulate.

5-30 cm, nearly as wide as long;

branches few, capillary, with a few spikelets distally;

pedicels 0.5-10 mm.

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

2.1-2.9 mm long, 0.8-1 mm wide, glabrous.

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.

1-1.2 mm, to 1/2 as long as the spikelets, attenuate, 5-9-veined, veins anastomosing apically;

upper glumes and lower lemmas similar, extending about 0.5 mm beyond the upper florets, 11-13-veined;

lower florets sterile;

lower paleas 1-1.3 mm;

upper florets 1.5-1.8 mm long, 0.6-0.8 mm wide, smooth.

panicles 3-35 cm long, about 1/2 as wide, shortly exserted;

axillary panicles smaller, not fully exserted;

rachises scabridulous;

primary branches usually solitary, sometimes paired, divergent and widely spaced, secondary branching mostly on the distal 1/3 of the primary branches;

pedicels 1-4 mm, spreading to appressed, confined to the distal portions of the secondary branches.

= 36.

= 36.