OregonFlora species comparison

erect to ascending.

erect, glabrous or pilose.

sheaths glabrous or white-villous;

blades 1.5–4 mm wide;

upper surfaces scabrous or hairy.

somewhat basally concentrated;

sheaths retrorsely hairy;

blades 10– 15 cm × 2.5–5 mm; flat, scabrous below; smooth above.

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.

(4)10–25 cm × 2–3 mm excluding the awns, 3–7 mm wide including the awns, 1 spikelet per node;

internodes 2.5–11 mm;

disarticulation at the rachis nodes.

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

10–25 mm excluding the awns, 2–6 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.

6–8 × 0.8–1.2 mm, linear-lanceolate to lanceolate; (1)3(5)-veined;

veins scabrous;

tips sometimes toothed;

glume awns 0–5(13) 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.

9.5–13 mm, glabrous; smooth proximally, scabrous distally; the lowest lemma often reduced and glume-like;

lemma awns 6–20(45)mm; straight to outcurving.

1–2 mm.

1.5–2.6 mm, usually indehiscent.

=28.