Flora of North America species comparison

8-160 cm, prostrate to erect when young, becoming erect at maturity.

erect;

nodes often pubescent.

of the basal leaves with scattered hairs, upper sheaths glabrous;

ligules 4-6 mm, acute;

blades 10-45 cm long, 3-15 mm wide, scabridulous.

glabrous;

ligules 4-5 mm, obtuse or acute;

blades 12-25 cm long, 7-12 mm wide.

7-40 cm long, 5-20 cm wide, nodding.

15-30 cm, equilateral, sometimes slightly secund.

18-32 mm, with 2(3) florets;

disarticulation beneath each floret;

disarticulation scars of all florets round to ovate or triangular.

15-24 mm, with 2-4 florets;

disarticulation beneath each floret;

disarticulation scars of the lower floret(s) in a spikelet oval to round, those of the third and fourth (and sometimes the second) florets heart-shaped.

subequal, 18-32 mm, 9-11-veined;

calluses bearded, hairs to 1/4 the length of the lemmas;

lemmas 14-22 mm, usually densely strigose below midlength, sometimes sparsely strigose or glabrous, veins not extending beyond the apices, apices usually bifid, teeth 0.3-1.5 mm, awns 23-42 mm, arising in the middle 1/3 of the lemmas;

lodicules without lobes on the wings;

anthers about 3 mm.

equal, 15-23 mm, 7-9(11)-veined;

calluses bearded;

lemmas about 21 mm, usually glabrous, sometimes pubescent beneath the awn insertion, irregularly bidenticulate to bisubulate, veins not extending beyond the apices, awns about 30 mm, arising at midlength;

lodicules with a small side lobe;

anthers about 2 mm.

= 42.

= 42.