Flora of North America species comparison

4-55 cm, erect;

nodes pubescent.

23-125 cm, erect;

nodes glabrous or pubescent.

glabrous or pubescent;

ligules 1-4 mm;

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

glabrous or pubescent;

ligules 0.6-1.9 mm;

blades to 38 cm long, 4-18 mm wide, flat, glabrous or pubescent, dark green.

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 1-3(4) racemosely arranged branches;

branches 2.3-13.4 cm, erect to divergent, terminating in a spikelet;

branch axes 0.2-1 mm wide, glabrous, margins scabrous.

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

2.1-3.3 mm long, 1.3-1.6 mm wide, paired, imbricate, appressed to the branch axes, elliptic to obovate, stramineous to brown.

absent;

upper glumes and lower lemmas veinless;

upper florets white.

0.4-1.2(1.8) mm, stramineous to brown;

upper glumes with papillose-based short pubescence, 3- or 5-veined, margins entire, lower lemmas with papillose-based short pubescence, lacking ribs over the veins, 3-veined, margins entire;

upper florets light stramineous.

0.8-0.9 mm, translucent, white.

1.3-1.5 mm, light to dark brown.

= 20.

= 40, 60.