Flora of North America species comparison

leaves triangular-lingulate to lingulate, 0.7–1.4 mm;

apex rounded-obtuse and weakly denticulate;

hyaline cells nonseptate, mostly efibrillose, and, if porose, with more pores per cell on the concave surface (3–6) than on the convex surface (0–2).

leaves 1.4–1.8 mm, elongate-triangular, lingulate-triangular, hemiisophyllous forms elongate triangular-ovate, 1.4–1.8 mm, apex usually conspicuously toothed, border narrow at base (less than 0.25 width);

hyaline cells narrowly rhombic to S-shaped, can be efibrillose and aporose but more commonly fibrillose and porose, 0–1-septate.

somewhat curved, leaves spreading.

turgid and terete, leaves, not 5-ranked.

ovate to ovate-lanceolate, 1.2–2 mm;

subsecund;

hyaline cells with numerous tiny pores in a continuous line along the commissures on the convex surface, no or scattered pores on the concave surface.

ovate, 1.1–1.7 mm, slightly concave, straight, apex weakly involute and conspicuously toothed;

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

dioicous.

uncertain, monoicous or dioicous or possibly both.

exserted, with scattered pseudo-stomata.

22–28 µm;

papillose on both surfaces;

proximal laesurae more than 0.5 spore radius.

22–25 µm, finely roughened.

fascicles with 2–3 spreading and 2–3(4) pendent branches.

fascicles with 2 spreading and 1–2 pendent branches.