Flora of North America species comparison

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

(30)45-120 (180) cm.

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.

shiny and indurate basally, glabrous or appressed hairy elsewhere, hairs to 5 mm, margins hyaline;

ligules 0.2-0.6 mm;

blades 20-50 cm long, 1.2-2(3) mm wide, flat, folded or involute, dark green, remaining so well into winter, glabrous on both surfaces or the adaxial surface sparsely hairy basally, margins 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.

15-30 cm long, 2-6 cm wide, open (contracted when immature), longer than wide, pyramidal to ovate, not diffuse;

lower nodes with 1-2(3) branches;

primary branches 2-8 cm, appressed or spreading to 50° from the rachis, not capillary, without spikelets on the lower 1/3;

secondary branches spreading;

pulvini hairy or glabrous;

pedicels 2-22 mm, longer than the spikelets, spreading, glabrous, scabridulous.

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

3.5-6.5 mm, purplish-brown.

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.

linear-lanceolate, membranous;

lower glumes 2.4-4.5 mm, 0.6-0.83 times as long as the upper glumes;

upper glumes (3.5)4-6(6.5) mm, as long as or longer than the florets;

lemmas 3.4-4.3 mm, ovate to lanceolate, membranous, glabrous, acute;

paleas 3.4-4.4 mm, ovate, membranous, glabrous;

anthers 2.5-3.4 mm, purplish.

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

1.8-2.2 mm, fusiform, brown.

= 24, 36, 54.

= unknown.