Flora of North America species comparison

(2)3.5-45 cm.

15-41cm.

(1)2-13 cm long, (3)4-8 mm wide;

rachises pubescent;

branches (0.5)0.7-2.7 mm, pubescent, with 2(3) spikelets, axes occasionally extending past the distal spikelets;

proximal internodes 0.2-0.6(0.7) mm, shorter than the second internodes.

4-9.5 cm long, 7-9 mm wide;

rachises pubescent;

branches 0.5-1 mm, pubescent, with 2(3) spikelets, axes not extending past the distal spikelets;

proximal internodes 0.5-0.8 mm, longer than the second internodes.

bisexual;

proximal spikelets 3-3.5 mm;

second spikelets 2.9-3.3 mm.

(0.9)1.2-2 mm long, 0.4-0.8 mm wide.

(1.2)1.4-1.6 mm long, 0.6 mm wide.

0.5-1 mm;

blades (0.5)0.7-8.5 cm long, 1.2-5 mm wide, glabrous.

0.5-1 mm;

blades 2.5-7 cm long, 3-5 mm wide, glabrous.

spikelets (1.8)2^.3 mm;

second spikelets (0.8)1-3.9 mm, sometimes sterile.

glumes 0.1-0.6 mm, membranous, minutely pubescent;

upper glumes 1.8-4.3 mm, minutely pubescent, 5-veined, rarely with 1-2 additional veins adjacent to the midvein;

glume projections (4)6-14, in 5 rows, (0.2)0.3-1 mm, uncinate;

lemmas (1.5)1.8-3.1 mm, sparsely pubescent on the back, midveins occasionally excurrent to 0.6 mm;

paleas (1.3)1.5-2.4 mm;

anthers 3, 0.4-0.6 mm, yellow, occasionally purple-or green-tinged.

glumes absent or to 0.4 mm, glabrous;

upper glumes 3-3.5 mm, minutely pubescent, 7-veined;

glume projections 6-9, in 7 rows, 0.1-0.6(1) mm, uncinate;

lemmas (2)2.3-2.7 mm, sparsely pubescent on the back;

paleas 2.1-2.3 mm;

anthers 3, 0.3-0.6 mm, yellow.

= 20.

= unknown.