OregonFlora species comparison

erect or decumbent, sometimes with saucer-like glands below the nodes.

glabrous with elliptical; yellowish, glandular pits below the nodes.

sheaths glabrous or occasionally glandular; tops with hairs to 5 mm;

blades (1)5–20 cm × (1)3–5(10)mm;

lower surfaces glabrous or sometimes glandular;

margins with conspicuous glands.

sheaths with elliptical glandular pits and with sparse hairs to 2 mm;

blades 2–12 cm × 1–3 mm, bases with glandular pits.

(3)5– 16(20) × 2–8.5 cm, oblong to ovate, condensed to open;

primary branches 0.4–5 cm, appressed or diverging 20–80° from the inflorescence axis;

pedicels 0.2–3 mm; stout; straight; stiff, usually divergent, occasionally appressed;

disarticulation below the florets; each floret falling as a unit;

rachillas persistent.

4–10(15) × 0.5–2 cm, narrowly elliptic, contracted; dense, glandular pits on inflorescence axis and branches;

primary branches 1 per node, appressed or occasionally diverging to 30° from the inflorescence axis;

pedicels 1.4–10 mm, appressed or divergent;

disarticulation acropetal.

6–20 × 2–4 mm, gray or greenish, 10–40 florets.

3.6–7.5 × 1.2–2 mm; light yellowish or occasionally reddish purple mottled, 6–11(14) florets.

broadly ovate to lanceolate, membranous, usually glandular;

lower glumes 1.2–2 mm, usually 1-veined;

upper glumes 1.2–2.6 mm, usually 3-veined.

ovate to lanceolate; hyaline;

lower glumes (0.7)0.9– 1.4 mm;

upper glumes 1.2–1.8 mm.

0.5–0.7 mm, globose to broadly ellipsoid, not grooved.

0.5–0.8 mm.

2–2.8 mm, broadly ovate, membranous;

keels with 1–3 saucer-like glands, obtuse to acute.

1.5–2.2 mm; ovate; hyaline; straw-colored;

veins greenish and conspicuous;

tips acute.

1.2–2.1 mm; hyaline;

keels scabrous or sometimes also ciliate.

1.2–2 mm; hyaline, persistent;

keels minutely scabrous.

3, 0.2–0.5 mm, yellow.

3, 0.2–0.3 mm; purplish.

=20.