Flora of North America species comparison

5-60 cm, solitary or loosely tufted, glabrous or pubescent.

15-75 cm, solitary or loosely tufted, usually glabrous, occasionally puberulent.

glabrous or pubescent;

ligules 0.3-1 mm;

blades to 10 cm long, 0.5-1 mm wide, flat or rolled, glabrous or pubescent.

glabrous or pubescent;

ligules 0.5-1 mm;

blades usually shorter than 10 cm, 0.5-1 mm wide, usually rolled, occasionally flat, glabrous or pubescent.

1-7(20) cm long, 0.5-1.5 cm wide, with 1-2 branches per node;

branches appressed to spreading.

2-24 cm long, 0.8-8 cm wide, usually panicles, sometimes spikelike branches solitary, with axillary pulvini, to erect when immature, spreading to maturity.

4-10(13) mm, with (4)5-11(17) florets;

rachilla internodes 0.5-0.7 mm.

4-10 mm, with 1-6 florets, often purple-tinged;

rachilla internodes 0.6-1.2 mm.

smooth, scabrous, or pubescent;

lower glumes 1.7-5.5 mm, 1/2 - 3/4 the length of the upper glumes;

upper glumes 3.5-7.5 mm;

lemmas 3.5-9.5 mm, smooth, scabrous, or evenly pubescent, 5-veined, awns of the lowermost lemma in each spikelet (3)6-20 mm;

paleas usually slightly longer than the lemmas, apices minutely bifid, teeth 0.2-0.5 mm;

anthers 0.7-3 mm.

1.7-4.5 mm, 1/2 - 2/3 the length of the upper glumes;

upper glumes 2.5-7.2 mm;

lemmas 2.7-6.5 mm, 5-veined, smooth, scabrous, or pubescent, apices entire, no more pubescent than the bases, awns of the lowermost lemma in each spikelet 0.3-9 mm;

paleas slightly shorter than the lemmas, apices entire or minutely bifid, teeth shorter than 0.2 mm;

anthers 0.3-1.5 mm.

1.7-3.7 mm.

3.5-6.5 mm.

= 14.

= 42.