Flora of North America species comparison

leaves equilateral to isosceles-triangular, small, less than 0.8 mm, mostly appressed to stem, apex acute to obtuse, hyaline cells efibrillose and nonseptate.

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.

straight to slightly curved, usually 5-ranked;

leaves not much longer at distal end than proximal end.

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

narrowly ovate-lanceolate, 0.8–1 mm, straight, moderately undulate and recurved in larger and/or wetter grown forms, not undulate and slightly recurved in compact forms from drier sites;

margins entire;

hyaline cells on convex surface with 1(2–3) pore per cell at apical end of cell, on concave surface with round wall thinnings in cell ends and angles; chlorophyllous cells triangular in transverse section and just enclosed on concave surface.

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.

21–25 µm; coarsely papillose on proximal and distal surfaces;

proximal laesura more than 0.5 spore radius.

not seen.

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

branch stems with cortex enlarged with conspicuous retort cells, often pinkish red at proximal end.

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

branch stems green, with cortex enlarged with retort cells.