Flora of North America species comparison

30-60 cm, slender.

30-70 cm, erect or spreading;

nodes 3-5, pubescent.

pilose-pubescent to nearly glabrous;

blades 7-28 cm long, 2-9 mm wide, pilose or glabrous.

densely pubescent to pilose;

auricles absent;

ligules 2-3 mm, lanceolate, pubescent, obtuse, erose;

blades 7-20 cm long, 3-7 mm wide, flat, usually pubescent to pilose, rarely glabrous.

10-20 cm long, 3-9 cm wide, erect, dense;

branches appressed to spreading, sometimes flexuous.

8-15 cm, open, drooping;

branches ascending to spreading.

15-20 mm, elliptic to lanceolate, more or less terete, with 3-9 florets.

20-30 mm, elliptic to lanceolate, terete to moderately laterally compressed, with 4-7 florets.

glabrous, acuminate;

lower glumes 8-10 mm, 1-veined;

upper glumes 12-16 mm, 3(5)-veined;

lemmas 11-14 mm, lanceolate to linear-lanceolate, sparsely pubescent, 5-veined, rounded over the midvein, apices acuminate, bifid, teeth 2-3 mm, usually aristate, sometimes acuminate;

awns 13-20 mm, geniculate, strongly to moderately twisted in the basal portion, arising 1.5 mm or more below the lemma apices;

anthers 2-2.5 mm.

glabrous or hispidulous;

lower glumes 6-9 mm, 1-veined;

upper glumes 8-10.5 mm, 3-veined, usually acute, rarely mucronate;

lemmas 9-15 mm, lanceolate, rounded over the midvein, glabrous, sometimes scabrous, apices subulate to acute, entire;

awns 4-8 mm, straight, arising less than 1.5 mm below the lemma apices;

anthers 3-5 mm.

= unknown.

= 28.