Flora of North America species comparison

leaves lingulate-triangular to lingulate, 1–1.4 mm, apex broadly rounded but becoming acute in hemiisophyllous forms, border strongly developed at base (more than 0.25 width);

hyaline cells rhombic and 0–3-septate with some cells in leaf midregion 2–septate.

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

weakly to strongly 5-ranked.

erect in distal portion of plants.

ovate to ovate-lanceolate, 0.9–1.2 mm, concave, subsecund on some branches, apex involute;

hyaline cells on convex surface with numerous round to elliptic pores along the commissures, grading from small round pores near apex to round pores near base, on concave surface with large round pores in proximal portions of leaf.

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.

18–33 µm, coarsely papillose on both surfaces;

proximal laesura less than 0.4 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 1–2 pendent branches.

fascicles with 2 short-spreading and 3 long-tapering pendent branches.