Flora of North America species comparison

3-45 cm, decumbent, highly branching;

nodes glabrous.

70-200 cm, slender, erect, branching;

nodes glabrous.

glabrous or pubescent;

ligules 1.3-2.2 mm;

blades 1-15 cm long, 1-6 mm wide, flat or folded, glabrous or pubescent.

glabrous;

ligules 0.7-1 mm, of hairs;

blades 3.5-30 cm long, 8-24 mm wide, flat, sparsely pubescent, abruptly rounded or cordate basally;

lower blades with a 0.5-13 cm pseudopetiole.

2-2.7 cm, axillary, concealed in the sheaths;

rachises flat, glabrous or scabrous.

terminal and axillary, 3-8 cm, on long peduncles, fully exerted from the sheaths;

rachises terete, hispid;

disarticulation beneath the primary bristles, fascicle axes persistent.

10-22 mm, sessile or pedicellate, pedicels to 0.2 mm;

lower glumes usually absent, sometimes to 0.5 mm, veinless;

upper glumes 0-1.3(3.5) mm, veinless;

lower florets sterile;

lower lemmas 10-22 mm, 9-13-veined;

lower paleas usually absent;

upper lemmas 10-22 mm, 8-12-veined;

upper paleas 2-7-veined;

anthers 4.7-7 mm, long-exserted from the florets at anthesis.

2.5-3.2 mm, sessile, green to purple.

veinless, truncate or emarginate;

lower glumes 0.2-0.3 mm;

upper glumes 0.3-0.4 mm;

lower florets sterile;

lower lemmas 2.5-3.2 mm, strigulose above, 5-7-veined;

lower paleas absent;

upper lemmas 2.3-3 mm, sparsely puberulent, 5-veined;

anthers 3, 1.5-1.9 mm.

1-6;

axes to 0.5 mm, with 1-2 spikelets;

outer and inner bristles alike, 6-15, 0.5-10.9 mm;

primary bristles 10-14 mm, usually not noticeably longer than the other bristles.

14-24 per cm;

fascicle axes 0.4-0.6 mm, with 1 spikelet, outer and inner bristles absent;

primary bristles 3.8-30 mm, scabrous.

= 36.

= unknown.