OregonFlora species comparison

with bases somewhat compressed-keeled;

internodes glabrous; shiny below the nodes.

erect to decumbent.

blades 2–7(11) cm × 1–2.8(4)mm; flat, occasionally conduplicate;

lower surface smooth or minutely scabrous;

upper surface minutely scabrous;

margins and midveins not conspicuously thickened; greenish;

tips acute.

sheaths open;

ligules membranous or hyaline, sometimes with minute hairs on the margins;

blades flat, folded or involute.

6–21 × 4–16 cm, broadly ovoid; open;

branches whitish;

primary branches 3–12 cm × 0.05–0.1 mm; capillary; lower branches spreading, not appearing clustered;

pedicels 3–14 mm; longer than the spikelets.

terminal, sometimes axillary; open to contracted panicles.

1.2–2.1 mm.

0.8–4 mm, flattened, 1(3) florets;

disarticulation above the glumes, occasionally below the pedicels.

equal, 0.6–1.7 mm, 1-veined; purplish, minutely scabrous particularly on the veins;

tips acute.

2; (0)1(3)-veined;

tips truncate to acuminate, sometimes mucronate or awned;

lower glumes sometimes rudimentary or absent, occasionally bifid;

upper glumes shorter or longer than the florets.

elongate, fusiform to elliptic, slightly dorsally compressed.

1.2–2.1 mm, lanceolate to oblong-elliptic; somewhat gray, glabrous; smooth, occasionally minutely scabrous near the tips;

tips acute; awnless or mucronate; the mucros to 0.3 mm.

3-veined;

tips awnless to awned;

lemma awns if present; straight or wavy to curled; terminal or arising between 2 minute teeth.

1–1.3 mm; greenish yellow to purplish at maturity.

(1)3.

short, glabrous or pubescent.

=20, 22, 28.