Flora of North America species comparison

leaves triangular to triangular-lingulate, 1–1.3 mm, apex acute to slightly obtuse, border broad at base (more than 0.25 width);

hyaline cells narrowly rhomboid, mostly 0–1-septate and mostly efibrillose.

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

apex very broad and lacerate;

hyaline cells efibrillose and aporose, often septate.

usually strongly 5-ranked.

strongly 5-ranked and straight.

ovate to ovate-lanceolate, 1.1–1.5 mm, concave, straight, apex slightly involute;

hyaline cells on convex surface with numerous oval to elliptic pores along commissures grading from small pores near apex to large round pores at base, concave surface with large round pores in proximal portions of leaf.

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.

monoicous or dioicous.

monoicous or dioicous.

19–27 µm, finely papillose on proximal surface, pusticulate on distal surface;

proximal laesura less than 0.4 spore radius.

22–34 µm;

both surfaces smooth, apparent ridged border on proximal surface;

proximal laesura more than 0.5 spore radius.

fascicles with mostly 3 spreading and 1–2 pendent branches.

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

branch stems green, with cortex enlarged with retort cells.