Flora of North America species comparison

30-56 cm, erect;

nodes glabrous.

5-80 cm, decumbent, occasionally rooting at the lower nodes, branching freely at the base, erect portion 20-40 cm;

nodes 2-6.

of midculm leaves glabrous or hirsute, with papillose-based hairs;

ligules 0.8-2.1 mm;

blades 4-15 cm long, 3-10 mm wide, glabrous or sparsely pubescent with papillose-based hairs.

mainly cauline;

sheaths glabrous or sparsely to densely pubescent, sometimes with papillose-based hairs;

ligules 0.2-1.5 mm, entire to lacerate;

blades 2.4-12.6 cm long, 2-5.4 mm wide, glabrous or pubescent.

simple, 12.8-27.5 cm long, 16.5-44.5 cm wide, open;

branches divergent;

lower primary branches 10.5-24 cm, often with 1-several sterile branches near the base;

pedicels divergent, spikelets solitary.

with 2-25 spikelike primary branches on 1-9 cm rachises;

primary branches 2-11 cm, axes not winged or narrowly winged, wings less than 1/2 as wide as the midribs, bearing spikelets in unequally pedicellate pairs;

secondary branches rarely present;

pedicels not adnate to the branch axes.

2.2-3.1 mm long, 0.7-1.1 mm wide, obovate or broadly elliptic.

1.5-2.5 mm long, 0.8-0.95 mm wide, ovate-elliptic to broadly elliptic, usually plump, usually purple-tinged.

0.1-0.8 mm;

upper glumes 1.8-2.8 mm, 3(5)-veined, glabrous or pubescent between the veins, hairs appearing as a narrow stripe;

lower lemmas similar to the upper glumes in length, texture, and pubescence, 7-veined, veins unequally spaced, lateral veins closer together than the 3 central veins;

upper lemmas 1.9-2.9 mm, glabrous, dark brown, narrowly acute;

anthers 0.5-0.7 mm, yellow or purple.

absent or to 0.8 mm and acute;

upper glumes 1.2-2.4 mm, from 0.8 times as long as to almost equaling the spikelets, glabrous, 3-7-veined, veins usually prominent;

lower lemmas 1.5-2.5 mm, usually glabrous, occasionally obscurely puberulent on the margins or, very rarely, distinctly pubescent, 7-veined, veins usually prominent;

upper lemmas light brown, gray, and purple.

1.3-1.6 mm.

= 36.

= 36.