Flora of North America species comparison

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

1.5–4.5 cm, sparsely 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-spreading or somewhat falcate-secund, rigid, erect below and flexuose above when dry, smooth, (3–)4–6(–7) × 0.5–0.8 mm, most of the leaf tips broken off, concave below to canaliculate above, from a lanceolate base to a long-acuminate, acute apex (when present);

margins entire, sometimes slightly denticulate at apex;

laminae 1-stratose or with some 2-stratose regions in patches between margin and costa;

costa excurrent, 1/5–1/4 the width of the leaves at base, smooth or slightly rough on abaxial surface in distal half, abaxial ridges absent, with a row of guide cells, two weakly developed stereid bands above and below, not extending above 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 or weakly bulging;

leaf cells usually smooth;

alar cells 1-stratose or with a few 2-stratose regions, well-differentiated, often extending to costa;

proximal laminal cells rectangular to short-rectangular, not pitted or with few pits, (11–)33–42(–51) × (7–)9–10(–13) µm;

median laminal cells regularly quadrate, not pitted, (9–)15–22(–26) × (5–)7–8(–11) µm;

distal laminal cells small, quadrate, not pitted.

1–2.5 cm, solitary, yellowish to brown.

1–1.6 cm, solitary, yellow to reddish brown.

dioicous;

male plants as large as females;

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

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, straight, erect, smooth, slightly furrowed when dry, brown to reddish brown;

operculum 1–1.5 mm.

12–19 µm.

9–22 µm.