Flora of North America species comparison

15-80 cm, erect;

nodes glabrous.

3-60 cm, erect;

nodes glabrous.

glabrous, pubescent distally;

ligules 0.5-0.8 mm;

blades 7-23 cm long, 1.5-8 mm wide, flat.

glabrous or pubescent;

ligules 0.2-0.7 mm;

blades 8-18 cm long, 2-7.1 mm wide, flat, glabrous or pubescent.

terminal, usually composed of a pair of branches, a third branch sometimes present below the terminal pair;

branches 2.5-12.7 cm, diverging to spreading, often arcuate, persistent;

branch axes 0.2-0.8 mm wide, glabrous, margins scabrous, terminating in a reduced spikelet.

terminal, usually composed of a digitate pair of branches, a third branch sometimes present below the terminal pair;

branches 1.8-6.4 cm, diverging to erect;

branch axes 0.5-1.3 mm wide, narrowly winged, glabrous, margins scabrous, terminating in a spikelet.

1.3-1.9 mm long, 0.8-1.1 mm wide, solitary, appressed to the branch axes, ovate, stramineous.

1.9-2.3 mm long, 1.2-2 mm wide, solitary, appressed to the branch axes, broadly elliptic to ovate to obovate, glabrous, stramineous, apices obtuse.

absent;

upper glumes pilose on the margins, veinless or 2-3-veined;

lower lemmas glabrous, veinless or 2-3-veined;

upper florets whitish to golden yellow.

absent;

upper glumes 3-veined, lower lemmas faintly 3-veined;

upper florets stramineous.

0.9-1.1 mm, white to yellow.

1.8-2.2 mm, white.

= 18, 20, 40, 80.

= 20, 40, 50.