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 densely pilose;

blades 3–13 cm × 2–4 mm, pilose to pubescent on both surfaces.

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.

5–15 × 3–7 cm; open, nodding;

pedicels sometimes longer than the spikelets, curved to reflexed.

(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.

15–30 × 8–12 mm; ovate, laterally compressed, usually dangling, with 9–15 florets;

floret bases usually concealed at maturity;

rachilla internodes concealed at maturity.

pilose to glabrous;

lower glumes 5–7 mm, 3–5-veined;

upper glumes 6.5–8 mm, 5–7-veined.

smooth or minutely scabrous;

lower glumes 5–6 mm, 3–5-veined;

upper glumes 6–8 mm, 7–9-veined.

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

about as long as the paleas.

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.

9–10 mm long, 6–8 mm wide, inflated, obovate or rhombic; leathery; smooth or scabridulous, obscurely 9-veined;

veins usually not raised and thickened;

margins hyaline, 1–1.3 mm wide, abruptly angled, not inrolled at maturity;

tips acute to obtuse; bifid;

teeth shorter than 1 mm, usually awnless;

lemma awns; if present; to 1 mm, arising less than 1.5 mm below the lemma tips.

0.6–1.5(2)mm.

0.7–1 mm.

=28.

=14.