OregonFlora species comparison

1–5 cm thick.

0.4–2 cm thick.

blades flat, 5–100 mm wide, glabrous or slightly scabrous.

blades flat, 8–40 mm wide, glabrous to slightly scabrous.

open or dense, 5–60 × 3–30 cm, brown;

disarticulation tardy or not occurring.

open, 10–50 × 5–25 cm; dark reddish brown at maturity;

disarticulation below the sessile spikelets, or below the pedicellate spikelets.

hard or leathery to membranous, glabrous to densely hairy;

keels winged.

hard; shiny, appressed pubescent.

exposed at maturity or not.

not exposed at maturity.

3–9 mm; bisexual, dorsiventrally compressed.

3.8–6.5 × 1.5–2.3 mm; bisexual.

3–6 mm, staminate or sterile.

3.6–5.6 mm, staminate.

awnless or awned;

lemma awns; if present, 5–30 mm; bent and twisted.

awnless or awned;

lemma awns; if present; bent, twisted; to 13 mm.

2–2.8 mm.

1.9– 2.7 mm.

=20, 40.

=20, 40.