Flora of North America species comparison

7-35(60) cm, erect or decumbent.

10-45 cm, wiry, erect to decumbent.

rounded below, margins and apices hairy, hairs to 3 mm;

ligules 0.3-1 mm;

blades 2-12(20) cm long, 2-6 mm wide, flat, abaxial surface glabrous, adaxial surface scabridulous, sometimes sparsely hispid, margins ciliate-pectinate.

inflated, mostly glabrous but the apices with small tufts of hairs, hairs to 3 mm;

ligules 0.1-0.3 mm;

blades 1-12 cm long, 0.6-2 mm wide, flat to loosely involute, abaxial surface glabrous, adaxial surface scabridulous, bases of both surfaces sometimes with papillose-based hairs, margins smooth or scabridulous.

4-15(18) cm long, 0.3-6 cm wide, open (contracted when immature), pyramidal;

lower nodes with 7-12(15) branches;

primary branches 0.5-4.5 cm, spreading 30-90° from the rachis, with elongated glands, without spikelets on the lower 1/3 – 1/2, secondary branches appressed;

pedicels 0.1-0.5 mm, appressed.

terminal and axillary, 2-5 cm long, 0.2-0.5 cm wide, contracted, cylindrical, included in the uppermost sheath;

lower nodes with 1-2(3) branches;

primary branches 0.4-1.8 cm, appressed, spikelet-bearing to the base;

secondary branches appressed;

pedicels 0.1-2.5 mm, appressed, scabridulous.

1.2-1.8 mm, plumbeous or brownish, often secund along the branch.

1.6-3 mm, yellowish to cream-colored, sometimes purple-tinged.

unequal, ovate to obovate, membranous;

lower glumes 0.3-0.7 mm, without midveins;

upper glumes 1.2-1.8 mm, at least 2/3 as long as the florets, often longer;

lemmas 1.2-1.7 mm, ovate to elliptic, membranous, glabrous, acute;

paleas 1.1-1.6 mm, ovate to elliptic, membranous, glabrous;

anthers 0.2-0.4 mm, yellowish or purplish.

subequal, shorter than the florets, lanceolate to ovate, membranous to chartaceous, glabrous;

lower glumes 1.5-2.4 mm, midveins often greenish;

upper glumes 1.7-2.7 mm;

lemmas 1.6-2.9 mm, ovate, chartaceous, glabrous, acute;

paleas 1.6-3 mm, ovate, chartaceous, glabrous;

anthers 3, 1.1-1.6 mm, purplish.

0.6-1 mm, obovoid, faintly striate, light brownish.

1.2-1.8 mm, obovoid, laterally flattened, light brownish or orangish-brown, translucent, finely striate.

= 24, 36, 54.

= 36.