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 or yellow-green, crisped and contorted when dry, flat when moist, elliptic, broadly elliptic, or sometimes obovate or oblong, (3.5–)4–7(–10) mm;

base long-decurrent;

margins toothed to near base, teeth sharp or occasionally blunt, of 1–2(–3) cells;

apex obtuse, rounded, acute, acuminate, or rarely retuse, mucronate or cuspidate, cusp sometimes toothed;

costa percurrent or excurrent;

medial laminal cells usually elongate, short-elongate, or occasionally ± isodiametric, (35–)50–65(–85) µm, less than 1/2 size near margins, in longitudinal or diagonal rows, collenchymatous, walls pitted;

marginal cells linear, in 2–4 rows.

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

(1–)3(–7), yellow to reddish or orange with age, 2–5 cm.

dioicous.

synoicous.

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

operculum conic-apiculate.

pendent, oblong, cylindric, or narrow-ovoid, 3–4.5 mm, neck not distinct;

operculum conic-apiculate.

18–24 µm.

20–36 µm.

stems 2–5(–9) cm, not dendroid;

sterile stems to 10 cm.

stems 2–4 cm, not dendroid;

sterile stems to 8 cm.