Flora of North America species comparison

5-60 cm, erect to decumbent.

10-25 cm, usually decumbent or geniculate.

2.5-20 cm, diffuse at maturity, lower branches horizontal to descending, spikelets usually confined to the distal 2/3, pedicels scabrous, lacking tumid epidermal cells.

(3.5) 5-8 cm, diffuse or contracted at maturity, lowest node almost always with 2 branches, lower branches ascending to horizontal in fruit, spikelets usually confined to the distal 1/3;

pedicels smooth or scabrous, with tumid epidermal cells.

2.5-7 mm, with 2-7 florets.

5-7(9.5) mm, with (2)4-5(7) florets.

rounded over the back, veins obscure, apices acute to truncate;

lower glumes 0.4-1.3 mm;

upper glumes 0.9-1.8 mm;

calluses with a few hairs;

lemmas 1.5-2(2.2) mm, mostly herbaceous, glabrous or sparsely hairy on the lower 1/2, principally along the veins, backs rounded, 5-veined, veins obscure, not extending to the margins, apical margins hyaline and often yellowish, uniformly and densely scabrous, apices widely obtuse to truncate, entire;

palea veins shortly ciliate proximally, glabrous, sometimes scabrous distally;

anthers 0.4-0.8 mm.

rounded over the back, veins obscure, apices acute;

lower glumes 1-2 mm;

upper glumes 2-3 mm, often borne distinctly above the lower glumes;

calluses glabrous or hairy;

lemmas (3) 3.2-4(4.5) mm, herbaceous or membranous, glabrous or sparsely hairy on the bases of the veins, backs rounded, 5-veined, veins obscure, not extending to the margins, apical margins smooth or scabrous, not white, apices usually acute, occasionally rounded, irregularly serrate or erose;

palea veins glabrous, smooth proximally, scabrous distally;

anthers 0.8-1.2 mm.

0.8-1.2 mm, obtuse to truncate, usually entire;

blades 1-7 mm wide, flat to involute.

1-2.8(3.3) mm, acute, obtuse, or truncate, entire or slightly erose;

blades usually involute and 0.5-1 mm in diameter, sometimes flat and 0.8-2 mm wide.

= 14, 28, 42.

= 56.