OregonFlora species comparison

lower sheaths densely pilose; upper sheaths pubescent or glabrous;

blades 2–19 cm × 1–4 mm;

lower surfaces glabrous or pubescent;

upper surfaces pubescent.

sheaths glabrous or loosely pubescent and becoming glabrous;

blades 15–30 cm × 1–12 mm;

lower surfaces pilose or glabrous;

upper surfaces pilose.

1–13 × 1–4 cm; erect, usually ovoid; open at anthesis, becoming contracted and dense, occasionally reduced to 1 or 2 spikelets;

branches usually shorter than the spikelets, ascending to erect; straight or nearly straight.

5–23 × 2.5–12 cm; open, nodding;

branches spreading to ascending; lower branches slightly drooping; some pedicels longer than their spikelets.

(11)14–20(23)mm, lanceolate; terete to moderately laterally compressed, 5–10 florets;

floret bases usually concealed at maturity;

rachilla internodes concealed at maturity.

10–20 mm; ovoid-lanceolate or ovate, laterally compressed, not purple-tinged, with 4–9(10) florets;

floret bases visible at maturity;

rachilla internodes visible at maturity.

pilose to glabrous;

lower glumes 5–7 mm, 3–5-veined;

upper glumes 6.5–8 mm, 5–7-veined.

scabrous or glabrous;

lower glumes 4–6 mm, 3–5-veined;

upper glumes 6–7 mm, 7-veined.

equal to or shorter than paleas; thin, weakly inrolled to flat.

6.5–11 × 3–5 mm, lanceolate, chartaceous, antrorsely pilose to pubescent, occasionally glabrous near the base or throughout, 7–9-veined; hyaline margins abruptly or bluntly angled, not inrolled at maturity;

lateral veins prominent, thickened and raised;

tips rounded to acute; bifid;

teeth shorter than 1 mm;

lemma awns 6–8 mm, usually arising less than 1.5 mm below the lemma tips; straight to recurved at maturity.

6.5– 8.5(10) × 1.7–2.5 mm, elliptic; leathery, rounded over the back; backs glabrous, sometimes pubescent, scabrous to puberulent on the margins and near the tips, obscurely 7-veined;

veins usually not raised and thickened;

margins smoothly curved, inrolled at maturity;

tips acute to obtuse; bifid, with teeth less than 1 mm, awned;

lemma awns (0)3–6(9.5)mm; straight or flexuous, arising less than 1.5 mm below the lemma tips.

0.6–1.5(2)mm.

1–3 mm.

=28.

=14, 28.