Flora of North America species comparison

leaves triangular-lingulate to lingulate, 1.1–1.4 mm, apex broad-rounded to narrowly truncate, border very broad at base (more than 0.3 width);

hyaline cells efibrillose, rhombic, mostly 1-septate but can be non-septate.

leaves broadly ovate, 3.5–4 mm, apex rounded and indistinctly toothed;

hyaline cells on convex surface with 10–20 small (2.5–7.5 µm) round pores approximately 1/6 the diameter of the hyaline cells along the commissures, cells on concave surface uniporose in distal end or aporose, sometimes one or a few pores are scattered over the surface of the cells.

long and tapering, usually strongly 5-ranked.

few, single and short or more commonly none.

ovate-lanceolate, 0.9–1.4 mm, concave, straight, apex involute;

hyaline cells on convex surface with very small ringed pores (less than 0.25 cell width) along commissures near apex, changing abruptly to large elliptical pores (0.4 cell width or more) basally, concave surface with large round pores in proximal margins and leaf base.

if any, are usually slightly smaller, 2–3 mm, but otherwise identical to the stem leaves.

dioicous.

dioicous.

immersed in perichaetial leaves, pseudopodium extremely short, without pseudostomata.

17–26 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

25–40 µm; coarsely papillose on both surfaces;

proximal laesura more than 0.5 the length of the spore

fascicles with 2 spreading and 1–2 pendent branches.

fascicles, if any, usually only 1 single branch.