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.

lower sheaths densely hairy with stiff, often retrorse hairs; upper sheaths pubescent or glabrous;

blades 9–13 cm × 2–4(9)mm, pilose 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.

7–16 × 3–6 cm; open; erect to ascending; some branches longer than the spikelets; slender, ascending to spreading.

(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.

14– 18(30) mm, oblong-lanceolate; terete to moderately laterally compressed, not purple-tinged, 4–9(13) florets;

floret bases usually concealed at maturity;

rachilla internodes 1.5–2 mm, usually concealed at maturity.

pilose to glabrous;

lower glumes 5–7 mm, 3–5-veined;

upper glumes 6.5–8 mm, 5–7-veined.

glabrous, occasionally scabrous or pubescent;

lower glumes 5–7 mm, 5-veined;

upper glumes 6–9 mm, 7(9)-veined.

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

equal to or shorter than paleas, weakly to strongly inrolled.

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.

8–11.5 × 1.7–2.6 mm, elliptic to lanceolate; leathery; backs usually glabrous, rounded over the back, distinctly 7(9)-veined;

veins not raised and thickened;

margins scabrous or pubescent, bluntly angled, inrolled or not at maturity;

tips acute to obtuse; bifid;

teeth shorter than 1 mm;

tips awned;

lemma awns 3–10 mm; straight, arising less than 1.5 mm below the lemma tips, awn of the lowest lemma shorter than the others.

0.6–1.5(2)mm.

0.7–2(3)mm.

1–2 mm shorter than lemmas.

=28.

=14, 28, 56.