Flora of North America species comparison

14-100 cm, usually ascending;

internodes glabrous.

30-80 cm, usually erect;

nodes and internodes appressed pubescent.

glabrous or pilose, margins ciliate;

ligules to 2 mm, membranous, ciliate;

blades to 20 cm long, usually less than 2 mm wide, filiform, scabrous adaxially.

3-7 cm long, 1-6 cm wide.

1-5 cm long, 1-3 cm wide, occasionally reduced to a raceme.

6.5-9 mm, with 3-4 florets.

9-12 mm, with 2-5 florets.

about 2 mm, glabrous or scabrous, apices erose;

lemmas 3-4 mm, lobes shorter than 1 mm, rounded;

awns shorter than 2 mm, straight;

paleas about 2.5 mm, keels ciliate;

anthers about 2 mm, reddish-purple.

subequal, 3.4-4.5 mm, acuminate;

lemmas 4-8 mm, lobes 4.5-8 mm, tapering to the acute apices;

awns 8-11 mm, divergent;

paleas 2-3 mm, keels ciliate;

anthers 1.5-2 mm, yellow.

about 2 mm long, 0.6 mm wide, tapering distally, tan.

1.5-2.5 mm, ovoid, tan.

to 1 mm, of hairs;

blades 1-5 mm wide, flat or involute, hispid or with papillose-based hairs.

= 40.

= unknown.