OregonFlora species comparison

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

erect to decumbent, sometimes with a ring of glandular tissue 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 sometimes glandular on the midveins; tops with hairs to 4 mm;

blades 1.5– 10 cm × 1–3(4)mm;

margins sometimes with saucer-like glands.

(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.

4–20 × 2.2–8(10)cm; ovate; open to contracted;

rachises sometimes with glandular spots or pits below the nodes or rarely with a glandular ring;

glands usually dull; greenish gray to straw-colored;

primary branches 0.5–6 cm, diverging 20–100° from the inflorescence axis;

pedicels 1–4 mm; stiff; straight, divergent, usually with a distal ring of saucer-like glands;

disarticulation acropetal;

paleas persistent.

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

4–7(11) × 1.1–2.2 mm, mostly reddish purple to greenish to occasionally grayish, 7–12(20) 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.

broadly ovate, membranous;

lower glumes 0.9–1.4 mm;

upper glumes 1.2–1.6 mm.

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

0.4–0.7 mm, ellipsoid, not grooved.

2–2.8 mm, broadly ovate, membranous;

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

1.4–1.8 mm, broadly ovate, membranous;

keels occasionally with 1–2 saucer-like glands;

tips acute to obtuse.

1.2–2.1 mm; hyaline;

keels scabrous or sometimes also ciliate.

1.3– 1.7 mm; hyaline;

keels smooth or minutely scabrous.

3, 0.2–0.5 mm, yellow.

2, 0.2–0.3 mm; reddish brown.

=20.

=40.