Flora of North America species comparison

30-110 cm, stout, erect;

nodes glabrous.

10-70 cm, erect to ascending;

nodes glabrous.

glabrous;

ligules 2-3 mm;

blades to 35 cm long, 2-5.4 mm wide, conduplicate (rarely flat).

glabrous, pubescent apically;

ligules 1.2-1.5 mm;

blades 6-20 cm long, 4-5 mm wide, flat to conduplicate, glabrous or pubescent.

terminal, with 2-7 racemosely arranged branches;

branches 1.6-7.1 cm, usually divergent, rarely merely ascending;

branch axes 0.6-1.1 mm wide, glabrous, terminating in a spikelet.

terminal, with 2-5 racemosely arranged branches;

branches 1.4-5.2 cm, divergent;

branch axes about 0.8 mm wide, glabrous, terminating in a spikelet.

2.5-3 mm long, 1.5-2.2 mm wide, paired, appressed to the branch axes, elliptic-ovate, light to dark brown.

2.3-2.7 mm long, 1.4-1.8 mm wide, paired, appressed to or divergent from the branch axes, elliptic, dark brown.

absent;

upper glumes usually with short, appressed pubescence, rarely glabrous, 5-veined, margins entire;

lower lemmas with short, appressed pubescence or glabrous, 3-veined, margins entire;

upper florets dark glossy brown.

absent;

upper glumes shortly pubescent, 5-veined, margins entire;

lower lemmas transversely rugose at maturity, glabrous, 5-veined, margins entire;

upper florets dark glossy brown.

1.4-1.6 mm, brown.

about 1.8 mm long, 1.4 mm wide, ellipsoidal.

= 20, 40, 60.

= 40.