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.

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.

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

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.

16–24 µm.