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 to 2 × 0.7 mm; rarely hemiisophyllous;

hyaline cells non-ornamented, mostly nonseptate.

few, single and short or more commonly none.

long and tapering to short and pointed, leaves loosely imbricate.

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

broadly ovate, to 2 × 1 mm or more wide, broadly ovate, hyaline cells non-ornamented, convex surface with round to elliptic pores along the commissures; chlorophyllous cells short-elliptic in transverse section and well-enclosed on both surfaces.

dioicous.

dioicous.

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

with numerous pseudostomata.

25–40 µm; coarsely papillose on both surfaces;

proximal laesura more than 0.5 the length of the spore

22–30 µm; roughly papillose to nearly smooth, with distinct Y-mark sculpture on distal surface;

proximal laesura 0.5–0.8 spore radius.

fascicles, if any, usually only 1 single branch.

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

branch stems with hyaline cells non-ornamented;

no or weak funnel-like projections on the interior end walls, large round pores on superficial cell walls.