Flora of North America species comparison

7.5-80 cm.

20-80 cm.

evenly distributed;

sheaths 1/2-1/4 the length of the internodes, open to near the base, margins hyaline distally;

ligules 4-13 mm, sides sometimes decurrent, margins at the base sometimes encasing the culms, truncate to acute;

blades 5.5-12 cm long, 1-8(10) mm wide, slightly scabrous.

evenly distributed;

sheaths frequently less than 1/2 as long as the internodes, open to near the base, margins overlapping;

ligules 3-7 mm, sides sometimes decurrent, margins entire to erose, acute;

blades 2.5-20 cm long, 2-8 mm wide, margins strigose or glabrous.

(2)4-14(18) cm long, to 11 cm wide;

pedicels 4-12 mm.

3.5-10 cm long, mostly 1-5 cm wide;

pedicels 5-20 mm.

(2)3-4(7) mm, triangular to oval, with 4-7(13) florets.

10-20 mm, oval to elliptic, with 4-12(15) florets.

2-2.5 mm;

upper glumes 2-3.5 mm;

lowermost lemmas 1.6-2 mm, frequently irregular in shape, becoming hyaline distally, glabrous, sometimes minutely scurfy, veins indistinct;

paleas about 1.5 mm, often minutely scurfy;

anthers 0.4-0.5 mm.

5-5.5 mm, 5-veined;

upper glumes 6-6.5 mm, 7-veined;

lowermost lemmas 7-9 mm, 7-9-veined, surfaces usually glabrous proximally, becoming villous distally, apices obtuse;

paleas about 4 mm, more or less ciliolate along the margins;

anthers 1.2-1.5 mm.

0.8-1 mm, ovoid.

2-3 mm, obovoid.

= 10, 14.

= 10, 14.