Flora of North America species comparison

4.5–10 cm, tomen-tose throughout with brown to red rhizoids.

erect-spreading, erect-appressed when dry, smooth, (2.5–)3–4(–6.5) × 0.3–0.5 mm, from an ovate-lanceolate base to a tubulose subula, narrowly obtuse at apex, rarely acute, sometimes apical leaves of stems julaceous;

margins entire;

laminae 1-stratose, occasional 2-stratose regions near costa in proximal part of leaf;

costa subpercurrent to percurrent, 1/10–1/6 the width of the leaves at base, smooth, abaxial ridges absent, with a row of guide cells, two well developed and thick stereid bands (5–6 cells thick), adaxial epidermal layer of cells not differentiated, the abaxial layer usually with a few cells enlarged;

cell walls between lamina cells slightly bulging;

leaf cells smooth;

alar cells 1- or 2-stratose, well-differentiated, not extending to costa;

proximal laminal cells elongate-sinuose, strongly pitted, (36–)54–65(–98) × (2–)5–6(–9) µm;

distal laminal cells (11–)17–26(–42) × (2–)5–6(–12) µm. Sexual condition dioicous;

male plants as large as females;

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

1.5–2 cm, solitary, yellow to reddish yellow.

1.5–2 mm, nearly straight and erect to slightly arcuate, ± striate when dry, yellowish brown;

operculum 1–1.7 mm.

14–19 µm.