Flora of North America species comparison

50-170 cm, stiffly erect.

80-120 cm.

rounded, glabrous except for a few hairs on either side of the collar;

ligules about 0.5 mm, membranous, ciliate;

blades 2-8 mm wide, flat or loosely infolded, glabrous, tapering to the apices.

10-30(36) cm long, 1-2 cm wide;

branches to 6 cm, erect or appressed;

pedicels 1-1.5 mm, glabrous.

9-15 cm long, 1-4 cm wide, nodding, purplish;

branches appressed or narrowly ascending;

pedicels 2-3(3.5) mm.

4-7 mm, with 5-11 florets.

7-10 mm, with 3-5 florets.

4-7 mm, always conspicuously exceeding and often twice as long as the adjacent lemmas, usually equaling or exceeding the distal florets, glabrous, 1-veined, tapering to acuminate apices;

calluses pilose;

lemmas (2)3-3.5 mm, veins pilose to well above midlength, lateral veins often excurrent;

paleas 2-3 mm, bases not bowed-out;

anthers 1-1.5 mm.

glabrous, 1-veined;

lower glumes 3.5-4.5 mm;

upper glumes 4-5 mm;

calluses sparsely pilose;

lemmas 4-5 mm, veins pilose at least to midlength, all 3 veins excurrent as short points;

paleas 3-3.5 mm, glabrous, bases bowed-out;

anthers 1-2(2.5) mm.

1-1.5 mm.

2-2.5 mm.

sheaths pilose;

ligules about 0.5 mm, membranous, ciliate;

blades 2-7 mm wide, flat, both surfaces sparsely pilose basally, margins smooth or scabridulous;

upper leaves with glabrous sheaths and blades.

= 40.

= unknown.