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 shorter than branch leaves, 0.8–1.6 mm, lingulate, hyaline cells non-septate above and commonly 1-septate below.

straight to slightly curved, usually 5-ranked;

leaves not much longer at distal end than proximal end.

short and blunt, branch leaves imbricate.

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.

0.9–2 mm, ovate, with conspicuously truncate apex, hyaline cells bulging on both surfaces, with 1–4 large circular to elliptic pores per cell on convex surface and 4–7 elliptic pores per cell on concave surface, internal commissural walls faintly papillose, cholrophyll cells elliptical to elliptical-ovate withn the broadest part typically some distance from convex surface.

dioicous.

unknown.

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

proximal laesura more than 0.5 spore radius.

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 typically with 2 spreading and 2 hanging branches.;

branch stems with single layer of cortical cells.