OregonFlora species comparison

erect to ascending.

usually somewhat decumbent.

sheaths glabrous or white-villous;

blades 1.5–4 mm wide;

upper surfaces scabrous or hairy.

sheaths glabrous and smooth but occasionally minutely scabrous or hairy;

blades 4–12 mm wide;

upper surfaces pilose or villous but occasionally puberulent or minutely scabrous.

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.

6–20 cm, nodding to pendent, 2 spikelets per node or rarely with 3 at some nodes;

internodes 3–10(12) mm;

disarticulation above the glumes and beneath each floret.

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

12–20 mm, appressed to divergent, 2–4(7) 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.

(4.5)7–10(11) × 0.7– 1.5 mm, bases flat, occasionally hard for 0.5 mm;

veins usually evident, linear-lanceolate; entire, widening or parallel-sided above the base, 3–5-veined, usually scabridulous to scabrous;

veins occasionally hirsute beyond mid-length;

margins hyaline or scarious;

glume awns 1–10 mm; straight.

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.

7–14 mm; smooth or minutely scabrous;

lateral veins hairy;

margins hairy beyond mid-length; marginal hairs 0.5–1 mm and longer than those elsewhere on the lemma;

lemma awns (2)8–30 mm, flexuous to moderately outcurving.

1–2 mm.

2–3.5 mm.

=28.