Flora of North America species comparison

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

2–11 cm, densely tomentose below with reddish brown rhizoids, interruptedly foliate, the leaves crowded in some parts forming swollen, globose regions.

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, arched and loosely imbricate with contorted apices when dry, ± undulate to rugose, (2.5–)5–6.5(–9) × 1–1.7 mm, concave below, tubulose above, acute, ovate at base, widest point at or somewhat below middle;

margins serrulate to serrate in distal half, plane to involute;

laminae 1-stratose or with 2-stratose regions near costa and on margins;

costa percurrent to shortly excurrent, 1/8–1/4 the width of the leaves at base, serrulate or toothed above on abaxial surface, abaxial ridges absent, with a row of guide cells, two stereid bands extending to apex, adaxial epidermal layer of cells not differentiated, the abaxial layer differentiated;

cell walls between lamina cells weakly to strongly bulging;

leaf cells strongly papillose above on abaxial surface, sometimes a few papillae on adaxial surface;

alar cells 2-stratose, distinctly differentiated, not extending to costa;

proximal laminal cells elongate, pitted, (30–)49–68(–101) × (5–)10–11(–15) µm, abruptly shorter in distal half of leaf;

distal laminal cells short, not or indistinctly pitted, cell walls irregularly thickened, (7–)11–12(–23) × (5–)7–13(–20) µm. Sexual condition pseudomonoicous;

dwarf males on rhizoids of female plants;

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

1–2.5 cm, solitary, yellowish to brown.

1–3 cm, solitary, reddish yellow or brown.

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

operculum 0.5–l.6 mm.

1.5–2.5 mm, arcuate, inclined to horizontal, contracted below mouth and furrowed when dry, yellowish brown to brown;

operculum 1.5–2.5 mm.

12–19 µm.

16–24 µm.