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 elongate-triangular, 1.3–1.5 mm; often spreading;

apex obtuse;

hyaline cells mostly efibrillose and 1–septate in proximal half and lateral portions of leaves.

straight to slightly curved, usually 5-ranked;

leaves not much longer at distal end than proximal end.

unranked, often blunt and with leaves moderately 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 to broadly ovate at branch base and becoming ovate-lanceolate at branch tip; 1.2–1.5 mm; undulate when dry, margins serrulate;

hyaline cells of convex surface with 0–5 pores or pseudopores at cell apex, concave surface with faint round wall thinnings in cell angles, but may be absent, chlorophyllous cells trapezoidal in transverse section, exposed more broadly on convex surface.

dioicous.

probably dioicous.

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 2–3 spreading and 0–2 pendent branches.;

branch stems green, with cortex enlarged with conspicuous retort cells.