Flora of North America species comparison

red or reddish brown.

green to dark green, slightly contorted or undulate when dry, obovate or occasionally elliptic, 2.5–5 mm;

base long-decurrent;

margins reddish brown, multistratose with stereid band, toothed distally, teeth paired, long, sharp;

apex acute, obtuse, or rounded-acute, cuspidate, cusp toothed;

costa percurrent or excurrent, distal abaxial surface smooth, sometimes with few small teeth;

medial laminal cells ± isodiametric or short-elongate, 25–40 µm, smaller towards margins, not in rows, not collenchymatous, blue postmortal color absent;

marginal cells linear, in (3–)4–5 rows.

single or multiple.

synoicous.

pale yellow, 1.5–4 mm;

operculum rostrate;

exostome dark reddish brown, often purplish.

16–24 µm.