OregonFlora species comparison

puberulent.

sheaths softly pilose, often with retrorse or spreading hairs;

blades 3.5–27 cm × 1–9 mm, pilose on both surfaces.

lower sheaths densely pilose; upper sheaths pubescent or glabrous;

blades 2–19 cm × 1–4 mm;

lower surfaces glabrous or pubescent;

upper surfaces pubescent.

panicles 13–25 × 2–17 cm, nodding at maturity but occasionally erect;

branches 1–7 cm, stiffly erect to ascending or spreading, 1–2 spikelets.

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.

25–70 mm, moderately laterally compressed, with 4–11 florets.

(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.

smooth or scabrous;

lower glumes 15– 25 mm, 1–3-veined;

upper glumes 25–35 mm, 3–5-veined.

pilose to glabrous;

lower glumes 5–7 mm, 3–5-veined;

upper glumes 6.5–8 mm, 5–7-veined.

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

22–30 mm, linear-lanceolate, scabrous, 7-veined;

margins hyaline;

tips acuminate; bifid;

teeth 3–5 mm, awned;

lemma awns 30–65 mm; straight.

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.

0.5–1 mm.

0.6–1.5(2)mm.

=28, 42, 56.

=28.