Flora of North America species comparison

17-100 cm, erect.

15-82 cm, erect, with (3)4-7 nodes.

mostly cauline or somewhat basally concentrated;

sheaths smooth;

ligules 2.3-7 mm, dorsal surfaces scabrous, apices acute, usually lacerate;

blades 6-20 cm long, 2-5 mm wide, flat.

cauline and basal;

sheaths smooth;

ligules (0.7) 1.2-4 mm, dorsal surfaces scabrous, apices usually rounded to truncate, sometimes acute, lacerate-erose;

blades 3-10 cm long, 1-2 mm wide, flat, becoming involute, or folded.

7-22 cm long, 1.5-5.5(7) cm wide, lanceolate to narrowly ovate, more or less open to dense, lowest node with 2-15 branches;

branches scabridulous, ascending to more or less appressed, mostly branching at or above midlength, some branching near the base, lower branches 1-5 cm;

pedicels 0.5-6 mm.

(5)10-25(36) cm long, (3)4-24 cm wide, broadly ovate, often nearly as wide as long, diffuse, the whole panicle often detaching at the base at maturity, forming a tumbleweed, bases often enclosed by the upper sheaths, lowest node with (3)5-11 branches;

branches scabrous, capillary, flexible, wide-spreading, branching in the distal 1/4, spikelets strongly clustered at the branch tips, lower branches 5-15 cm;

pedicels 0.1-2.5(3.5) mm.

lanceolate, yellow-green, often tinged with purple.

ovate to narrowly ovate, greenish or purplish.

equal to subequal, 2.5-4 mm, 1-veined, scabrous to scabridulous on the midvein, at least distally, sometimes also sparsely scabridulous over the back, acute to acuminate;

callus hairs (0.8)1-2 mm, abundant, conspicuous;

lemmas 2-3 mm, smooth, translucent to opaque, 5-veined, veins prominent at least distally, apices acute, entire or erose, sometimes toothed, teeth to about 0.2 mm, unawned;

paleas absent, or to 0.2 mm and thin;

anthers 3,1.5-2.3 mm.

subequal, 1-2 mm, 1-veined, keeled, keels scabrous, sometimes the body also scabrous towards the apices, acute to acuminate;

callus hairs to 0.2 mm, sparse;

lemmas 0.8-1.2 mm, scabridulous, translucent to opaque, 5-veined, veins obscure or prominent distally, apices usually obtuse, sometimes acute, entire, unawned;

paleas absent, or to 0.2 mm and thin;

anthers 3, 0.2-0.5 mm.

1.5-2 mm.

0.7-1 mm.

= 42.

= 28.