Flora of North America species comparison

dark green, green, or yellow-green, crisped and contorted when dry, flat when moist, elliptic, narrowly elliptic, or occasionally ovate or oblong, (3–)5–9(–11) mm;

base broadly long-decurrent;

margins toothed to near base, teeth sharp, of 1 or 2 cells;

apex acute, acuminate, or occasionally obtuse or rounded, cuspidate, cusp toothed;

costa excurrent, percurrent, or rarely subpercurrent;

medial laminal cells usually short-elongate or ± isodiametric, 40–70(–80) µm, somewhat smaller near margins to about 1/2 size, in weakly defined longitudinal rows, rarely in diagonal rows, collenchymatous, walls pitted, pits often indistinct;

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

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.

3–6(–8), reddish proximally, yellow distally, 2–4 cm.

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

dioicous.

dioicous.

pendent, cylindric, 3.5–4.5 mm, neck not distinct;

operculum conic-apiculate.

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

operculum conic-apiculate.

20–25 µm.

18–24 µm.

stems 3–8 cm, not dendroid;

sterile stems to 10 cm.

stems 2–5(–9) cm, not dendroid;

sterile stems to 10 cm.