Flora of North America species comparison

(6)10-30(40) cm tall, (0.3)0.6-1(2.5) mm thick, glabrous or hispidulous.

(15)30-65 cm tall, 0.8-2 mm thick, glabrous or hispidulous;

nodes glabrous or densely villous.

1-4(6) cm;

branches with 3-9 shortly pedicellate spikelets.

compact (rarely open), 5-10 cm long, 1-3 cm wide, usually 2-4(6) times longer than wide, occasionally interrupted in the lower 1/2;

branches with 5-17 shortly pedicellate spikelets.

6-12(15) mm, with (5)6-12(20) florets.

7-11 mm, purplish to pale, with 3-15 florets;

lower glumes 5-7 mm;

upper glumes 6-9 mm, generally equaling or exceeding the lowest florets;

lemmas 4-6 mm, awned from between the lobes, awns 1-3.5 mm, apices bilobed, lobes 1.5-2.5 mm, rounded to truncate, lateral veins forming a mucro to 1 mm;

anthers 1, 1-1.5 mm.

exceeded by the lowest florets, pale;

lower glumes 4-7 mm;

upper glumes 4-7 mm;

lemmas 3-6 mm, green or purplish-green when young, becoming stramineous at maturity, awned, awns 0.5-2.5 mm, apices acute, entire or bidentate, teeth 0.3-0.5 mm;

anthers usually 3, 0.3-1 mm.

1-1.5 mm.

1.3-1.5 mm.

2-3.5 mm;

blades (1)3-6(9) cm long, (0.5)1-1.5(2.5) mm wide, both surfaces sparsely pilose or glabrous, grayish-green.

0.2-0.6 mm;

blades 5-10 cm long, 2-2.5 mm wide, flat in moist conditions, both surfaces pilose to villous, green.

= 16.

= 16.