Flora of North America species comparison

red or brown.

dark reddish brown.

green, yellowish, or occasionally dark green, slightly contorted, usually coiled and twisted when dry, sometimes to one side of stem, narrowly elliptic, narrowly ovate-elliptic, or ovate-lanceolate, 3–6 mm, proximal stem leaves narrowly triangular;

base short-decurrent;

margins pale brown, 2-stratose, toothed to below mid leaf, sometimes to near base, teeth paired, large, sharp;

apex acute or acuminate, apiculate or cuspidate, cusp sometimes toothed;

costa ending well below apex or occasionally percurrent, distal abaxial surface strongly toothed, adaxial surface occasionally toothed;

medial laminal cells ± isodiametric or short-elongate, (15–)17–26(–30) µm, slightly smaller towards margins, not in diagonal rows, sometimes in longitudinal rows, not or weakly collenchymatous, blue postmortal color absent;

marginal cells linear, in (2–)3–4 rows.

green to dark green, undulate or contorted and often somewhat twisted when dry, broadly ovate, elliptic, or ovate-elliptic, sometimes narrow, (2–)2.5–3.5(–4) mm;

base short- to long-decurrent;

margins sometimes reddish brown or brownish with age, 1-stratose or rarely 2-stratose in short sections, entire or weakly toothed distally, rarely to below mid leaf, teeth single or rarely paired, small, blunt, sometimes reduced to small extensions of distal cell ends;

apex rounded-acute, acute, or obtuse, apiculate or sometimes cuspidate, cusp weakly toothed;

costa subpercurrent, percurrent, or sometimes ending well before apex, distal abaxial surface smooth;

medial laminal cells short-elongate or sometimes ± isodiametric and irregularly angular, (17–)20–35(–40) µm, slightly smaller towards margins, not in diagonal rows, sometimes in weakly defined longitudinal rows, weakly or not collenchymatous, blue postmortal color present in cells;

marginal cells linear, in 1–2(–3) rows.

single.

single.

dioicous.

dioicous.

pale brown, 3–5 mm;

operculum conic-mammillate, rarely short-rostrate;

exostome yellowish brown.

yellow-brown, 3–5 mm;

operculum conic-mammillate;

exostome greenish yellow.

30–35 µm.

17–22 µm.