Flora of North America species comparison

15-80 cm, erect;

nodes glabrous.

30-100 cm, strongly decumbent, upright portion usually not standing more than 20 cm tall, much branched;

nodes glabrous.

glabrous, pubescent distally;

ligules 0.5-0.8 mm;

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

glabrous;

ligules 1-2.4 mm;

blades to 7 cm long, 3-6.5 mm wide, flat.

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, with 2-5 racemosely arranged branches;

branches 2-6 cm, diverging, persistent;

branch axes 2-3.3 mm wide, broadly 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.

3.2-4 mm long, 1.6-1.7 mm wide, solitary, appressed to the branch axes, elliptic, abruptly pointed, stramineous.

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 and lower lemmas glabrous, 5-veined;

upper florets stramineous, lemmas with a few minute hairs at the apices.

0.9-1.1 mm, white to yellow.

2-3 mm, white.

= 18, 20, 40, 80.

= 40.