Flora of North America species comparison

cauline;

sheaths usually shorter than the internodes, lowermost sheaths appressed-pilose basally;

collars glabrous;

ligules less than 0.5 mm;

blades usually 4-12 cm long, 0.5-1.5 mm wide, flat or loosely involute, somewhat lax, glabrous or scabridulous, pale green.

spicate or racemose, (5)7-20 cm long, 2-4 cm wide;

primary branches rarely developed.

divergent, pedicels with axillary pulvini.

unequal, glabrous, brownish-green with a purple tinge;

lower glumes (9)12-22(28) mm, 3-7-veined, midvein extended into a 1-13 mm awn between 2 delicate setae;

upper glumes (7)11-20(24) mm, 1-veined;

calluses 0.5-2 mm;

lemmas (9)12-22(23) mm, glabrous, light-colored, often mottled;

awns (8)12-65(70) mm, subequal, spreading;

anthers usually 1 and less than 0.5 mm, rarely 3 and 3-4 mm.

8-14 mm, brown.

25-55 cm, erect or geniculate at the base, highly branched.

= 22.