OregonFlora species comparison

8–200 cm tall, often prostrate when young but becoming erect.

blades 10– 45 cm × 3–15(25) mm; flat or occasionally involute, scabrous.

cauline;

sheaths open;

ligules membranous;

blades flat.

7–40 × 6–12 cm;

branches spreading;

disarticulation beneath each floret.

open panicles.

18– 32 mm with 2–3(5) florets.

15–50 mm, pedicellate, laterally compressed, with 1–6(8) florets;

disarticulation above the glumes, usually also between the florets (cultivated species not disarticulating).

18–32 mm with 9–11 veins; awnless.

usually exceeding the florets, membranous, glabrous, 3–11-veined; awnless.

shorter than the lemmas, concealed at maturity; terete, pubescent.

8–160 cm tall.

hairs to 25% as long as the lemmas.

glabrous to hairy.

14–22 mm with 5–9 veins; leathery; thin and membranous at the tip, densely pubescent below mid-length, sometimes sparsely pubescent or glabrous;

tips bifid;

teeth 0.3–1.5 mm but lacking long bristle-like tips;

lemma awns 23–42 mm, arising in the middle 33% of the lemma backs.

more or less hard, enclosing the caryopses at maturity, 5–9-veined, pubescent below mid-length, sometimes glabrous;

tips bifid with the teeth sometimes long and bristle-like;

lemma awns usually present, arising on the lemma back, usually bent and twisted.

about 3 mm.

3.

=42.