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 lingulate to spatulate, widest above middle (1.5 times as wide as the base), 1.5–2.5 mm, apex obtuse and dentate to lacerate;

border entire and little broadened at base, hyaline cells elongated-rhomboid, normally 1-septate, strongly fibrillose in distal portion, convex surface with numerous large pores and resorption gaps in apical angles, concave surface with large resorption gaps below and large resorption pores above.

long, tapering, imbricate, not 5-ranked.

unranked, terete.

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, 1.3–2.5 mm, straight, not concave;

apex weakly involute, broadly truncate with 6–10 conspicuous teeth;

border entire;

hyaline cells on convex surface with elliptic pores (4–8 per cell) along the commissures, concave surface with large round pores in distal half and proximal portion of cells.

monoicous.

dioicous.

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

proximal laesura less than or equal to 0.5 spore radius

26–34 µm; finely granulose-roughened.

fascicles with 2 spreading and 1–2 pendent branches.

fascicles with 2 spreading and 1–2 pendent branches.