Flora of North America species comparison

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.

leaves 0.7–1 mm (to 1.2 mm in hemiisophyllous forms) elongate-triangular to triangular-lingulate, apex obtuse-erose, to apiculate; usually fibrillose at least apically; in hemiisophyllous forms spreading and in anisophyllous forms appressed;

hyaline cells often septate at base.

few, single and short or more commonly none.

moderately long and tapering, unranked to weakly 5-ranked, leaves not much elongated at distal end.

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

1–1.7 mm, ovate-lanceolate, undulate and recurved when dry;

hyaline cells on convex surface with 3–10 round pores per cell in the cell angles and free, on concave surface with round wall thinnings in the ends and angles.

dioicous.

unknown.

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

25–40 µm; coarsely papillose on both surfaces;

proximal laesura more than 0.5 the length of the spore

not seen.

fascicles, if any, usually only 1 single branch.

fascicles with 2 spreading and 2–3 pendent branches.;

branch stem cortex enlarged and with conspicuous retort cells.