Flora of North America species comparison

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

2.5–7 cm, densely tomentose with reddish brown rhizoids.

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.

straight, erect-spreading, little changed when dry, smooth, (4–)5.5–8(–9) × 0.5–1 mm, concave below, tubulose above, from a lanceolate base to a long-acuminate subula, apices acute or sometimes ± blunt;

margins entire or slightly serrate in the distal 1/3;

laminae 1-stratose;

costa percurrent to shortly excurrent, 1/10–1/6 the width of the leaves at base, smooth to slightly rough above on abaxial surface, abaxial ridges absent, with a row of guide cells, 2 well-developed stereid bands extending almost to apex, abaxial epidermal layer of cells differentiated, rarely some cells in adaxial epidermal layer enlarged;

cell walls between lamina cells not or slightly bulging;

leaf cells smooth;

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

proximal laminal cells elongate, pitted, (16–)36–62(–112) × (3–)7–8(–20) µm;

distal laminal cells short-rectangular to irregularly angled, pitted, (9–)10–17(–31) × (3)7–8(18) µm. Sexual condition pseudomonoicous;

dwarf males on rhizoids of female plants;

interior perichaetial leaves abruptly acuminate, convolute-sheathing.

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

2.5–3.5 cm, solitary, rarely 2 per perichaetium, yellow to reddish yellow.

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.

2–3.5 mm, arcuate, inclined, furrowed when dry, light to dark brown;

operculum 1.5–2.8 mm.

16–24 µm.

14–22 µm.