Flora of North America species comparison

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.

leaves triangular, ovate-triangular to triangular-lingulate, 1–1.3 mm; appressed to spreading;

apex obtuse, hyaline cells usually fibrillose near apex.

long, tapering, imbricate, not 5-ranked.

straight to somewhat curved, leaves moderately elongate at distal end.

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.

ovate-lanceolate; usually more than 2 mm; straight; weakly undulate and slightly recurved when dry, margins entire;

hyaline cells on convex surface with numerous small free pores in proximal 2/3 of leaf and in apical region with numerous pseudopores along commissures, on concave surface with numerous round free pores;

cells relatively long and narrow in basal region, much longer than in mid region; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface.

monoicous.

dioicous.

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

proximal laesura less than or equal to 0.5 spore radius

29–33 µm;

both surfaces very smooth;

proximal laesura long, more than 0.6 spore radius.

fascicles with 2 spreading and 1–2 pendent branches.

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

branch stems green, cortex enlarged with conspicuous retort cells.