OregonFlora species comparison

erect to ascending.

erect.

sheaths glabrous or white-villous;

blades 1.5–4 mm wide;

upper surfaces scabrous or hairy.

sheaths glabrous or pubescent;

blades 1.5–6 mm wide;

outer surfaces usually glabrous;

inner surfaces with appressed hairs.

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.

3.5–26 cm; erect to slightly nodding, 1 spikelet per node but occasionally with 2 at a few nodes;

internodes 3.5–15 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.

8–31 mm, 1.5–3 times longer than the internodes, appressed, 3–11 florets, glabrous or hairy;

hairs to 1 mm.

(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.

5–14 mm, 50–75% the length of the adjacent lemmas, 0.7–1.3 mm wide, lanceolate, glabrous or hairy; smooth or scabrous, 3–5-veined; flat or weakly keeled;

keels straight;

margins narrow, tapering from the base or from beyond mid-length;

tips acute to acuminate, sometimes mucronate or short-awned.

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.

7–12 mm, glabrous to densely long-hairy; all hairs similar, sometimes scabrous;

tips acute to awned;

lemma awns; if present; to 2 mm; straight.

1–2 mm.

2.5–6 mm.

=28.