Flora of North America species comparison

leaves 1.1 × 1 mm; rarely hemiisophyllous;

hyaline cells non-ornamented, frequently septate.

leaves triangular to triangular-lingulate, 0.9–1.1 mm; appressed to spreading;

apex apiculate, acute or narrowly obtuse, appressed to spreading;

hyaline cells nonseptate and efibrillose.

clavate and rounded at distal end.

straight to more typically curved, typically stout and blunt ended; strongly 5-ranked, leaves not much elongate at distal end.

broadly ovate, 2.4 × 1.7 mm;

hyaline cells on convex surface with numerous round pores along the commissures, comb-lamellae on hyaline cell walls where overlying chlorophyllous cells; chlorophyllous cells broadly triangular in transverse section and well-enclosed on the convex surface.

ovate to ovate-lanceolate, 1.4–1.8 mm; straight to often subsecund; weakly undulate and slightly recurved;

hyaline cells on convex surface with 1 pore per cell at apical end of cell, on concave surface with round wall thinnings in the cells ends and angles; chlorophyllous cells triangular to triangular-ovate in transverse section, very well-enclosed within concave surface.

dioicous.

dioicous.

with pseudostomata.

22–29 µm; finely papillose on both surfaces;

indistinct triradiate ridge on distal surface;

proximal laesura 0.5–0.6 spore radius.

25–28 µm; roughly papillous on both surfaces;

proximal laesura more than 0.5 the length of the spore.

fascicles with 2 spreading and 2 pendent branches.;

branch stems with hyaline cell comb-lamellae visible on interior cortex wall, cortical cell end walls with conspicuous funnel projections more than 1/2 length of cell, superficial cortical wall aporose.

fascicles with 2 spreading and 2 pendent branches.;

branch stems green but often reddish at proximal end, with cortex enlarged with conspicuous retort cells.