Flora of North America species comparison

5-40 cm, usually erect.

15-40 cm, erect.

basally concentrated;

ligules 0.8-2.2 mm, obtuse to acute, mostly entire, sometimes slightly erose;

blades involute, 1.2-1.9 mm wide when flattened.

2-18 cm, compact to diffuse at maturity, lower branches ascending to descending, usually spikelet-bearing to the base;

pedicels scabrous, lacking tumid epidermal cells.

5-8 cm, open and diffuse at maturity, lowest node usually with long branches, lower branches ascending, horizontal, or descending, spikelets usually confined to the distal 73;

pedicels glabrous and smooth, lacking tumid epidermal cells.

3.5-8 mm, with 2-6 florets.

4-7 mm, with 4-5 florets.

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

lower glumes 0.7-1.5 mm;

upper glumes 1.4-3 mm;

calluses with a few hairs;

lemmas 2.4-4 mm, herbaceous, mostly smooth, usually glabrous, sometimes with a few hairs near the base, principally along the veins, backs usually rounded, sometimes weakly keeled distally, 5-veined, veins obscure, midveins often slightly scabrous and prominent in the distal 1/2, often extending to the apical margins, lateral veins not extending to the margins, apical margins ranging from smooth to scabrous, entire, not white, apices acute, entire;

palea veins glabrous or shortly ciliate proximally, uniformly scabrous distally;

anthers 1-2 mm.

narrow, not enfolding the base of the lower lemmas, rounded over the back, veins obscure or distinct, apices acute to obtuse;

lower glumes 1.7-3 mm, usually less than 2/3 as long as the adjacent lemmas;

upper glumes 2.5-4 mm;

rachilla internodes abruptly or gradually broadened to the point of attachment with the lemmas, at least the lowest internode usually more than 0.09 mm thick;

calluses with a few hairs;

lemmas 4-5 mm, mostly herbaceous, hairy along and between the veins on the proximal 1/2, backs rounded, 5-veined, veins obscure or distinct, not extending to the margins, apical margins hyaline, smooth, apices acute, entire, becoming erose with age;

palea veins with curly, intertwined hairs proximally, these hairs rarely lacking, scabrous distally;

anthers 1.5-2.5 mm.

1.5-3 mm, acute to obtuse, entire;

blades 2-8 mm wide, flat or folded.

= 14.

= 14.