Flora of North America species comparison

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

5–8 cm, scarcely tomentose with whitish 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 or spreading, distal leaves with twisted apices when dry, slightly rugose, (3.5–)5–7(–8) × 1–1.5 mm, concave proximally, tubulose distally, from an ovate-lanceolate base to a long or short subula, broadly acute, some leaves short, ovate, somewhat obtuse, forming julaceous regions, in the middle or basal part of the stems;

margins not or slightly serrate in the distal part, somewhat involute in the middle part;

laminae 1-stratose;

costa ending before the apex, 1/13–1/8 the width of the leaves at base, smooth or sometimes the distal part with two weakly serrated ridges on abaxial surface, row of guide cells, two stereid bands, adaxial and abaxial epidermal layers of cells not differentiated or sometimes a few cells in the abaxial layer differentiated;

cell walls between lamina cells not bulging;

leaf cells smooth;

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

proximal laminal cells elongate-sinuose, pitted, (42–)75–87(–107) × (7–)8–10(–16) µm;

distal laminal cells short, sinuose, pitted, (16–)30–65(–79) × (7–)9–13(–16) µm. Sexual condition pseudomonoicous;

dwarf males on rhizoids of female plants;

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

1–2.5 cm, solitary, yellowish to brown.

2–4 cm, solitary, yellow, yellowish brown or reddish yellow.

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

operculum 0.5–l.6 mm.

2–3.5 mm, arcuate, inclined, smooth, ± furrowed when dry, yellow to yellowish brown;

operculum 1.5–2 mm.

12–19 µm.

14–24 µm.