Flora of North America species comparison

leaves triangular-lingulate to lingulate, 1.1–1.4 mm, apex broad-rounded to narrowly truncate, border very broad at base (more than 0.3 width);

hyaline cells efibrillose, rhombic, mostly 1-septate but can be non-septate.

leaves lingulate,small, equal to or less than 0.8 mm, appressed to stem;

apex with strong lacerate split in the middle;

hyaline cells efibrillose, aporose, and nonseptate.

long and tapering, usually strongly 5-ranked.

strongly 5-ranked, short and blunt, not much elongated at distal end.

ovate-lanceolate, 0.9–1.4 mm, concave, straight, apex involute;

hyaline cells on convex surface with very small ringed pores (less than 0.25 cell width) along commissures near apex, changing abruptly to large elliptical pores (0.4 cell width or more) basally, concave surface with large round pores in proximal margins and leaf base.

ovate; usually less than 1.5 mm;

stiff and slightly reflexed, straight to slightly subsecund;

margins entire;

hyaline cells moderately long and narrow (6–8:1), convex surface with one small round pore per cell at apex and numerous pseudopores on the margin, concave surface with large round wall thinnings in the cell angles and ends; chlorophyllous cells triangular in transverse section, with apex reaching concave surface.

dioicous.

unknown.

17–26 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

not seen.

fascicles with 2 spreading and 1–2 pendent branches.

fascicles with 2 spreading and 2–3 pendent branches.;

branch stems green, with cortex enlarged with retort cells.