Flora of North America species comparison

10-80 cm, often geniculate at the base, much branched near the base;

internodes mostly scabridulous or smooth, always scabridulous below the nodes.

12-50 cm, erect to geniculate;

internodes mostly glabrous and smooth or scabridulous, scabridulous or strigulose below the nodes.

often shorter than the internodes, glabrous, smooth or scabridulous;

ligules 1-2 mm, membranous to hyaline, truncate to obtuse;

blades 3-8.5(10) cm long, 1-2.5 mm wide, flat or loosely involute, scabrous abaxially, strigulose adaxially.

usually longer than the internodes, glabrous, smooth or scabridulous;

ligules 1.5-3.1 mm, hyaline, truncate to obtuse, irregularly toothed to lacerate, with lateral lobes that exceed the central portion;

blades 2-8.5 cm long, 0.8-2 mm wide, flat, sometimes involute, scabridulous abaxially, shortly pubescent to minutely villous adaxially, midveins prominent abaxially.

6.5-13.5 cm long, 1-6.5 cm wide, not dense, often purplish;

branches 1.6-4 cm, ascending or diverging up to 80° from the rachises, spikelet-bearing to the base;

pedicels 2-6 mm, appressed to divaricate, antrorsely scabrous;

disarticulation above the glumes.

10-26 cm long, 2.8-8 cm wide;

primary branches 2.6-7 cm, often capillary, diverging 25-80° from the rachises;

pedicels 4-7 mm, usually curved, often through 90° or more.

2.5-5.5 mm, borne singly.

1.4-2 mm.

0.4-1.3 mm, exceeded by the florets, 1-veined, obtuse, often minutely erose;

lower glumes 0.4-1 mm;

upper glumes 0.6-1.3 mm;

lemmas 2.5-3.8(5.3) mm, narrowly lanceolate, mostly smooth, scabridulous distally, hairy on the calluses, lower 1/2 of the margins, and midveins, hairs 0.2-0.5 mm, apices acuminate, awned, awns 10-30 mm, straight to flexuous;

paleas 2.2-4.8 mm, narrowly lanceolate, acuminate;

anthers 0.3-1.2 mm, purplish.

equal, 0.7-1.2 mm, usually conspicuously strigulose, particularly near the margins and apices, 1-veined, acute to obtuse, unawned;

lemmas 1.4-2 mm, oblong-elliptic, greenish, sometimes purplish-tinged, shortly appressed-pubescent on the midveins and margins, apices acute or obtuse, unawned;

paleas 1.3-1.8 mm, oblong-elliptic, intercostal region sparsely short-pilose or glabrous;

anthers 0.6-1.2 mm, olivaceous.

1.7-2.5 mm, fusiform, reddish-brown.

0.8-1.2 mm, fusiform, brownish.

panicles with 1-3 spikelets present in the axils of the lower leaves.

= 20, 40, 60.

= 20, 24.