Flora of North America species comparison

green or yellow-green, crisped and contorted when dry, flat when moist, ovate, elliptic, oblong-elliptic, or rarely obovate, (3–)4–6(–10) mm;

base narrowly long-decurrent;

margins toothed to near base, smaller leaves sometimes nearly entire, teeth blunt or less commonly sharp, of (1–)2–3(–4) cells;

apex rounded, occasionally truncate or obtuse, rarely retuse, cuspidate or apiculate, cusp occasionally toothed;

costa percurrent, excurrent, or rarely subpercurrent;

medial laminal cells elongate, rarely ± isodiametric (especially near margins), 45–85 µm, less than 1/2 size near margins, in ± longitudinal, occasionally diagonal rows, collenchymatous, sometimes weakly, walls pitted, pits sometimes indistinct or absent;

marginal cells linear, sometimes short-linear or rhomboidal, in (2–)3–4 rows.

green to yellow-green, crisped and contorted when dry, flat when moist, broadly elliptic, ovate, orbicular, or oblong-elliptic, (1–)2–6(–8) mm;

base not decurrent or rarely short-decurrent;

margins weakly to moderately toothed distally or to 3/4 leaf length, rarely to near base, often entire on sterile stems, teeth blunt, of 1 (or 2) cells;

apex broadly rounded, obtuse, or occasionally truncate or retuse, usually narrowly mucronate or cuspidate, cusp bent to side, rarely toothed;

costa percurrent or excurrent;

medial laminal cells elongate or occasionally ± isodiametric, (30–)50–65(–85) µm, distinctly smaller near margins, often less than 1/2 size, in longitudinal and ± diagonal rows, not to weakly, rarely strongly, collenchymatous, walls pitted, pits sometimes indistinct or absent;

marginal cells short-linear or rhomboidal, sometimes linear in larger leaves, in 2–4 rows.

1–3, yellowish or brownish green, 2–4 cm.

1(–3), yellow to reddish brown, 1.8–4.5 cm.

dioicous.

dioicous.

pendent, cylindric, 3–4.5 mm, neck not distinct;

operculum conic-apiculate.

pendent, cylindric or oblong-cylindric, 3–5 mm, neck not distinct;

operculum conic-apiculate.

18–24 µm.

25–30 µm.

stems 2–5(–9) cm, not dendroid;

sterile stems to 10 cm.

stems 2–5 cm, not dendroid;

sterile stems to 12 cm.