Flora of North America species comparison

leaves to 2 × 0.7 mm; rarely hemiisophyllous;

hyaline cells non-ornamented, mostly nonseptate.

leaves narrowly triangular-lingulate, 1.5–2 mm, apex right-angled to apiculate, border moderately strong and greatly broadened at the base (more than 0.25 width);

hyaline cells rhombic, 0–1-septate, normally fibrillose near apex.

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

not 5-ranked, terete, long and tapering.

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-lanceolate, 1.5–2.3 mm, straight, concave, apex strongly involute;

margins entire;

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

dioicous.

dioicous.

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.

27–32 µm, finely papillose on both surfaces;

proximal laesura less than 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.