Flora of North America species comparison

4-55 cm, erect;

nodes pubescent.

40-75 cm, erect, not swollen at the base;

nodes pubescent.

glabrous or pubescent;

ligules 1-4 mm;

blades 10-40 cm long, 8-22 mm wide, flat, glabrous or sparsely pubescent.

pubescent;

blades to 15 cm long, 5-10 mm wide, flat, pubescent.

terminal, with (7)20-70 racemosely arranged branches;

branches 1.2-9.5 cm, diverging to spreading, occasionally arcuate, disarticulating at maturity;

branch axes 0.7-1.5 mm wide, broadly winged, glabrous, margins scabrous, extending beyond the distal spikelet.

terminal, with 3-8 racemosely arranged branches;

branches 2-7 cm, spreading, terminating in a spikelet;

branch axes narrow, sparsely pubescent.

1.1-1.9 mm long, 0.5-0.8 mm wide, solitary, appressed to the branch axes, elliptic, pubescent, white.

2-2.5 mm long, 1.4-1.6 mm wide, paired, imbricate, appressed to the branch axes, ovate.

absent;

upper glumes and lower lemmas veinless;

upper florets white.

absent;

upper glumes shortly pubescent, 3-veined, margins entire;

lower lemmas glabrous, lacking ribs over the veins, 3-veined, margins entire;

upper florets pale to stramineous or golden brown.

0.8-0.9 mm, translucent, white.

= 20.

= unknown.