Flora of North America species comparison

leaves to 2 × 0.7 mm; rarely hemiisophyllous;

hyaline cells non-ornamented, mostly nonseptate.

leaves triangular-lingulate to broadly lingulate, 0.9–1.3 mm, apex broadly rounded to obtusely angled, border very strong and broad at base (more than 0.4 width);

hyaline cells rhombic, efibrillose, most 0–1-septate.

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

long, tapering, imbricate, not 5-ranked.

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.

ovate, 2–2.5 mm, concave, straight, apex involute;

hyaline cells on convex surface with elliptic pores along the commissures grading from moderate-sized pores near leaf apex to large pores at the base, concave surface with large round pores in proximal portions of leaf.

dioicous.

monoicous.

with numerous pseudostomata.

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

proximal laesura 0.5–0.8 spore radius.

23–31 µm, irregularly coarsely papillose on both surfaces;

proximal laesura less than or equal to 0.5 spore radius

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.

fascicles with 2 spreading and 1–2 pendent branches.