OregonFlora species comparison

erect to ascending.

often decumbent or geniculate.

sheaths glabrous or white-villous;

blades 1.5–4 mm wide;

upper surfaces scabrous or hairy.

sheaths glabrous;

blades 3–4 mm wide, glabrous or hairy;

lower surfaces less densely hairy and with shorter hairs than the upper surfaces.

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)5–9 cm; erect, 1 spikelet per node;

internodes 4–5.5 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.

(9)10–15(17)mm, appressed; (3)4–5 florets;

rachillas hairy;

hairs about 0.4 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.

8–12 × 1.2– 2 mm; about 75% as long as to equaling the adjacent lemmas, narrowly ovate to obovate, often purplish, glabrous or occasionally scabrous;

keels smooth but occasionally scabrous, 3(5)-veined, glabrous;

margins unequal; the wider margin 0.3– 1 mm wide, usually widest in the distal 33%;

tips acute to rounded, often awned;

glume awns; if present; to 2 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.

(6.4)8–9.5 mm, glabrous to pubescent; all similar, usually awned;

lemma awns; if present, 0.5–3 mm; straight.

1–2 mm.

0.7–1.3 mm.

=28.