OregonFlora species comparison

sheaths smooth or slightly scabrous, rarely pubescent;

collars usually pubescent, rarely glabrous;

blades (6)8–40(42) cm × (1)2– 5(8)mm, usually flat;

lower surfaces smooth or slightly scabrous;

upper surfaces smooth, scabrous or sparsely pubescent.

sheaths and collars smooth;

blades (3)4–20(38)cm × (2)3–13 mm; flat;

lower surfaces smooth;

upper surfaces smooth or slightly scabrous, glabrous to sparsely to moderately pubescent on the veins.

(5)6–15(25) × 1–2.5 cm, contracted to somewhat open; erect, usually greenish to straw-colored, uncommonly purplish;

branches (1.2)2–3(6) cm, slightly scabrous, rarely densely long-scabrous;

spikelet-bearing to the base.

7–16(19) × (1)1.5–2 cm; erect, usually contracted; pale to dark purple;

branches (0.2)2.4–6.7(7.7)cm; smooth, sometimes sparsely scabrous distally;

spikelet-bearing to the base.

(3)4–4.5(5.5)mm, rounded to slightly keeled.

(4.5)5.5– 8(9)mm, keeled.

with hairs 0.5–1.5(2.5)mm, 20–50(60)% as long as the lemmas; sparse.

with hairs 0.8–1 mm, 20–33% as long as the lemmas; sparse.

2.5–4 mm, 0.5–2 mm shorter than the glumes;

lemma awns 2.8–3.5(4.5) mm, usually attached to the lower 20% of the lemma, rarely higher, exserted from the spikelet; stout, readily distinguished from the callus hairs, strongly bent.

4–6.5(7.5) mm, 0–1.5 mm shorter than the glumes, minutely scabrous;

lemma awns 6–11 mm, attached to the lower portion of the lemma, exserted more than 2 mm from the spikelet; stout; bent.

1.2–2.6 mm.

2–3.5 mm.

=28, 42, 56.