Flora of North America species comparison

5-60 cm, often geniculate at the base, freely branched.

(4)60-90 cm.

scabrous to scabridulous;

ligules 1.5-4(6) mm, rounded to truncate;

blades 20-40 cm long, (3)5-15 mm wide, flat, rather stiffly erect, narrowing to the base, glabrous, often glaucous, veins widely spaced, cross venation evident on the abaxial surfaces;

flag leaf blades 3.5-10 cm.

1-4 cm;

lowermost branches 8-12(15) mm;

pedicels 0.1-0.3 mm, pubescent.

8-13 cm long, (1)2-6 cm wide, diffuse, with slender, often drooping branches and 3+ spikelets per branch.

(4)5-9 mm;

lower glumes 3-5 mm;

upper glumes 5-7 mm;

sterile florets about 3 mm, awn of the first floret 3.5-5 mm, awn of the second floret 6-10 mm, exceeding the upper glumes by 2-3 mm;

fertile florets about 2 mm;

anthers 2, 2.8-4.1 mm.

4.5-6 mm, tawny or green to olive-green, sometimes infused with purple;

rachilla internodes 0.2-0.5 mm, glabrous.

subequal, equaling or slightly exceeded by the apices of the bisexual florets;

lower glumes 4.5-5 mm long, 0.7-1 mm wide;

upper glumes 3.5-5.2 mm long, 1-1.8 mm wide;

lowest 2 florets staminate;

lemmas usually mostly glabrous on the body, sometimes scattered-pubescent, scabridulous near the apices, margins usually pilose, apices rounded and shallowly bilobed, unawned or awned, awns to 1 mm;

first lemma 4-5 mm long, 0.75-1 mm wide, length more than 5 times width, narrowly elliptic;

bisexual lemmas 3.5-4.5 mm, margins pilose, particularly distally;

anthers 2-3.5 mm.

to 0.5 mm, sometimes absent;

ligules 1-2(3) mm, obtuse to acute;

blades 0.8-6 cm long, 1-5 mm wide.

= 10, 20,

= 42.