Flora of North America species comparison

1.5–7 cm, generally branched above, somewhat tomentose with reddish brown rhizoids.

5–8 cm, scarcely tomentose with whitish to reddish brown rhizoids.

erect-spreading, slightly curled to ± straight when dry, usually with a few undulations in distal part, (3.5–)5–8(–10) mm × 0.5–1 mm, concave below, keeled above, sometimes margins ± involute, lanceolate, narrowly acute to acuminate;

margins serrulate to serrate above;

laminae 1-stratose or with few 2-stratose regions on or near the distal margins;

costa percurrent to shortly excurrent, 1/6–1/4 the width of the leaves at base, smooth to slightly papillose above on abaxial surface, abaxial ridges absent, with a row of guide cells, two stereid bands extending to the apex, adaxial epidermal layer of cells not differentiated, the abaxial layer differentiated;

cell walls between lamina cells not or slightly bulging;

leaf cells smooth to weakly papillose above on abaxial surface;

alar cells 2-stratose, differentiated, often extending to costa;

proximal laminal cells linear-rectangular, pitted, (22–)41–60(–90) × (5–)6–8(–12) µm;

distal laminal cells short-rectangular, irregularly angled or rounded, not pitted, (7–)12–20(–32) × (4–)8–9(–14) µm. Sexual condition pseudomonoicous;

dwarf males on stem rhizoids of female plants;

interior perichaetial leaves abruptly short-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.

1.2–2.5 cm, solitary, yellow to reddish yellow.

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

2–2.7 mm, arcuate, inclined to horizontal, furrowed when dry, rarely slightly strumose, brown to reddish brown;

operculum 1.5–2.5 mm.

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

operculum 1.5–2 mm.

14–28 µm.

14–24 µm.