Flora of North America species comparison

0.5–6 cm, densely tomentose with light brown to reddish brown rhizoids.

0.5–3(–5) cm, densely tomentose with white to reddish brown rhizoids.

falcate-secund to nearly straight, crisped to weakly crisped when dry, smooth, (1–)2–4(–5) × 0.3–0.6 mm, concave below, tubulose above, from a lanceolate or ovate-lanceolate base to an acuminate subula, apex acute;

margins smooth to serrulate above;

laminae 1-stratose;

costa percurrent or sometimes ending just before apex, 1/6–1/4 the width of the leaves at base, smooth to ± rough with papillae or small teeth on abaxial surface near apex of leaf, abaxial ridges absent, with a row of guide cells, two stereid bands above and below not extending above the leaf middle, adaxial epidermal layer of cells not differentiated, the abaxial layer with some cells differentiated;

cell walls between lamina cells not bulging;

leaf cells smooth or weakly abaxially prorate above;

alar cells 1-stratose, distinctly differentiated, not extending to costa;

proximal laminal cells elongate-rectangular, not pitted or with few pits, (12–)24–38(–70) × (4–)10–15(–18) µm;

distal laminal cells short-rectangular to quadrate, not pitted, (5–)12–14(–23) × (5–)7–12(–14) µm. Sexual condition dioicous;

male plants as large as females;

interior perichaetial leaves abruptly long-acuminate, convolute-sheathing.

erect-spreading, cirrate to strongly crisped when dry, smooth, (1–)2–3(–4) × 0.2–0.5 mm, concave below, subtubulose to keeled above, lanceolate at base, acuminate above to an acute apex, rough above on abaxial surface;

margins irregularly serrate to serrulate in distal half of leaves;

laminae 1-stratose;

costa percurrent to shortly excurrent, 1/6–1/4 the width of the leaves at base, rough with papillae or teeth on abaxial surface in distal half of leaf, abaxial ridges absent, with a row of guide cells, two weakly developed stereid bands above and below, not extending to the leaf middle, adaxial and abaxial epidermal layers of cells not differentiated or with a few cells enlarged in both layers;

cell walls between lamina cells not bulging;

leaf cells smooth below, mammillose or usually abaxially prorate or toothed in distal half of leaves, giving leaves a dull appearance;

alar cells 1-stratose, differentiated or sometimes indistinctly differentiated, not extending to costa;

proximal laminal cells rectangular to oblong-rectangular, not pitted or with few pits, (10–)20–32(–50) × (4–)6–8(–13) µm;

distal laminal cells usually quadrate to short-rectangular, some cells transversely elongate, not pitted, (5–)8–10(–26) × (2–)3–6(–9) µm. Sexual condition dioicous;

male plants as large as females;

interior perichaetial leaves abruptly acuminate, convolute-sheathing.

1–2.5 cm, solitary, yellowish to brown.

0.5–1.5 cm, solitary, rarely 2 per perichaetium, yellowish to reddish brown.

1.5–3 mm, straight and erect or nearly so, striate when dry, yellowish brown to brown;

operculum 0.5–l.6 mm.

1.2–2 mm, straight and erect to slightly inclined, rarely somewhat arcuate, smooth, striate when dry, light yellowish brown;

operculum 1–1.5 mm.

12–19 µm.

12–24 µm.