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 very small, less than 0.8 mm, triangular with blunt rounded apex.

straight to slightly curved, usually 5-ranked;

leaves not much longer at distal end than proximal end.

erect in distal portion of plants.

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.

large, 2.8 mm or longer, sub-squarrose, ovate, involute to broad, truncate apex with more than 6 teeth;

hyaline cells with up to 6 non-ringed pores on convex surface with few or no pseudopores, 2–4 elliptic ringed pores on concave surface in corners or along commissures, internal commissural walls minutely papillose (best viewed in oblique sections), rarely smooth; chlorophyllous cells narrowly triangular in transverse section, more broadly exposed on convex surface, enclosed on concave surface.

dioicous.

monoicous.

with abundant pseudostomata on surface of capsule.

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

proximal laesura more than 0.5 spore radius.

31–43 µm; coarsely papillose on both proximal and distal surfaces, raised Y-mark sculpture on distal surface;

proximal laesura moderately long, 0.4–0.7 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 with 2 short-spreading and 3 long-tapering pendent branches.