Flora of North America species comparison

10-150 cm, erect or decumbent;

nodes glabrous.

30-110 cm, decumbent and rooting at the lower nodes;

nodes glabrous.

glabrous;

ligules 0.3-1.2 mm, often with a row of hairs behind them;

blades 5-30 cm long, 2-8(12) mm wide, flat, usually glabrous.

glabrous;

ligules 1-2.3 mm;

blades to 50 cm long, 2-10 mm wide, flat, glabrous or pubescent.

terminal, with 1-5 digitately or racemosely arranged branches;

branches 3-10 cm, diverging to spreading, persistent;

branch axes 1.5-3 mm wide, broadly winged, glabrous, margins scabrous, terminating in a spikelet.

terminal, with 2-6(10) racemosely arranged branches;

branches 3.5-12.5 cm, diverging to erect;

branch axes 1-2.1 mm wide, glabrous, terminating in a spikelet.

1.8-3.2 mm long, 2-2.3 mm wide, solitary, diverging from the branch axes, ovate, glabrous, olive green to dark, glossy brown.

2.5-3 mm long, 1.3-1.6 mm wide, paired, appressed to the branch axes, elliptic, light brown.

absent;

upper glumes as long as the lower lemmas, 5-7-veined;

lower lemmas 3-5-veined;

upper florets 2.5-3 mm long, 1.4-1.8 mm wide, dark glossy brown.

often present, 0.5-2 mm, brown;

upper glumes glabrous, 5-veined, margins entire, lower lemmas glabrous, 5-7-veined, margins entire;

upper florets olive, golden brown, or dark brown.

1.1-1.5 mm, nearly orbicular.

1.6-1.8 mm, brown.

= 20, 40, 60, 120.

= 20, 30, 40.