OregonFlora species comparison

erect to ascending.

erect.

sheaths glabrous or white-villous;

blades 1.5–4 mm wide;

upper surfaces scabrous or hairy.

basal sheaths becoming glabrous;

blades to 28 cm × 1.7–5 mm;

inner surfaces densely pubescent or rarely sparsely pubescent.

5–20 cm; erect, sometimes partially enclosed in the sheath of the uppermost leaf, 2 spikelets per node or rarely 3–4 at some nodes;

internodes 3–5(8)mm;

disarticulation initially at the rachis nodes; later beneath each floret.

spikes, 5–20 cm; erect to slightly nodding, 1 spikelet per node;

internodes 5–12 mm;

disarticulation above the glumes; beneath each floret.

10–15 mm, divergent, 2–4 florets; lowest florets sterile and glume-like in 1 or both spikelets at each node.

10–22 mm long; about twice as long as the internodes, 2–8.5 mm wide, appressed, 4–10 florets.

(10)30–100 mm including the awns; the bases hard and glabrous;

glume bodies about (2)5–10 × 1–2 mm, setaceous, 2–3-veined;

margins firm;

glume awns (8)25–90 mm; each split above the base into 3–9 unequal divisions, scabrous, flexuous to outcurving from near the bases at maturity.

4–10 × 0.5–1.3 mm, narrowly lanceolate; widest at or below mid-length, glabrous, often glaucous, 1–3-veined; flat or weakly keeled;

margins 0.1–0.2 mm wide; widest near mid-length;

tips usually acuminate, awned or awnless;

glume awns 0–6 mm.

fertile lemmas 8–10 mm; smooth or scabrous near the tips, 2 lateral veins extending into bristles to 10 mm;

lemma awns (10)20– 110 × 0.2 mm at the base, divergent to arching.

6–12 mm; smooth or slightly scabrous;

margins often sparsely pubescent near the base; longest lemma awns 9–28 mm, strongly divergent.

1–2 mm.

3.5–6 mm.

=28.