Flora of North America species comparison

leaves short-rectangular, 0.8–1.1 mm, hyaline cells mostly non-septate and absent comb-fibrils.

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.

not 5-ranked, terete, long and tapering.

ovate to ovate-elliptic, 1.4–1.8 mm;

hyaline cells on convex surface with numerous pores along the commissures;

comb-lamellae obvious only in proximal 1/2 of leaf; chlorophyllous cells broadly triangular in transverse section and well-enclosed on the convex surface.

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.

dioecious.

dioicous.

(22) 24–27(–28) µm, surface granulate.

27–32 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

fascicles with 2 spreading and 1–2 hanging branches.;

branch stems with hyaline cells non-ornamented, no or weak funnel-like projections on the end walls of cortical cells, cortical cell walls usually with large round pores.

fascicles with 2 spreading and 1–2 pendent branches.