Flora of North America species comparison

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

apex obtuse, hyaline cells usually fibrillose near apex.

leaves lingulate, broadly lingulate to lingulate-spatulate; 0.8–1.3 mm, apex broad, truncate and lacerate, border broad at base (more than 0.25 of base);

hyaline cells rhomboid, efibrillose, and rarely septate.

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

typically long and tapering, not 5-ranked.

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.

ovate to ovate-lanceolate, 1–1.4(–1.8) mm, concave, straight, apex strongly involute, margins entire;

hyaline cells on convex surface with numerous elliptic pores along the commissures, grading from small pores near the apex to large pores near the base, concave surface with large round pores along the margins and base.

dioicous.

dioicous.

29–33 µm;

both surfaces very smooth;

proximal laesura long, more than 0.6 spore radius.

21–27 µm, moderately to coarsely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

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

branch stems green, cortex enlarged with conspicuous retort cells.

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

branch stem with solitary retort cells or in groups of 2–3, necks moderately distinct.