Flora of North America species comparison

leaves lingulate-spatulate, large, 1.3–1.6 mm; appressed to stem;

apex very broad and lacerate;

hyaline cells efibrillose and aporose, often septate.

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.

strongly 5-ranked and straight.

turgid and terete, leaves, not 5-ranked.

ovate-lanceolate, 1.5–3 mm; straight to slightly subsecund; imbricate to somewhat reflexed and not undulate;

margins entire;

hyaline cells long and narrow, length to width ca. 10:1 on convex surface with 1 or more small pores in the cell ends and angles and often with numerous pseudopores along the margins, on concave surface with large round wall thinnings on the cell ends and angles; chlorophyllous cells triangular to trapezoidal in transverse section, apex often exposed on 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.

monoicous or dioicous.

uncertain, monoicous or dioicous or possibly both.

22–34 µm;

both surfaces smooth, apparent ridged border on proximal surface;

proximal laesura more than 0.5 spore radius.

22–25 µm, finely roughened.

fascicles with 2 spreading and 2 pendent branches, leaves not much elongated at distal end.;

branch stems green, with cortex enlarged with retort cells.

fascicles with 2 spreading and 1–2 pendent branches.