OregonFlora species comparison

cauline and basal, not forming an overwintering basal rosette;

ligules membranous with cilia;

blades flat or folded, glabrous to spreading pubescent.

terminal and often axillary panicles;

disarticulation below the glumes, sometimes at the base of the upper florets.

dorsiventrally compressed, sometimes subterete or laterally compressed, 1–8 mm; awnless.

unequal; ours glabrous to scabrous;

lower glumes absent to almost as long as the spikelets, 1–9-veined;

upper glumes approximately as long as the spikelets to much longer, 3–13(15)-veined, membranous.

smooth.

sterile or staminate; the lower lemma similar to the upper glume.

bisexual; the upper lemma hard and leathery, usually shiny, glabrous, usually smooth;

margins involute and usually clasping the palea.

striate, rarely transversely rugose.

3.