Flora of North America species comparison

leaves triangular-lingulate to lingulate, 1.1–1.4 mm, apex broad-rounded to narrowly truncate, border very broad at base (more than 0.3 width);

hyaline cells efibrillose, rhombic, mostly 1-septate but can be non-septate.

leaves triangular to triangular-lingulate, 1.2–1.7 mm, apex acute to sometimes shortly cuspidate due to involute margins near apex, border narrow at base (less than 0.25 width);

hyaline cells mostly efibrillose and aporose, 0–1(–2)-septate.

long and tapering, usually strongly 5-ranked.

long and tapering, unranked.

ovate-lanceolate, 0.9–1.4 mm, concave, straight, apex involute;

hyaline cells on convex surface with very small ringed pores (less than 0.25 cell width) along commissures near apex, changing abruptly to large elliptical pores (0.4 cell width or more) basally, concave surface with large round pores in proximal margins and leaf base.

1.3–2.7 mm, ovate to ovate-lanceolate, 1.3–2.7 mm, concave, straight, apex involute;

hyaline cells on convex surface with 2–6 large, narrowly elliptic ringed pores along the commissures, but usually absent from marginal regions of leaf, concave surface aporose or with 1–4 large round pores per cell especially near base.

dioicous.

monoicous.

17–26 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

22–32 µm, finely to irregularly coarsely-papillose on proximal surface, irregularly coarsely papillose on distal surface;

proximal laesura less than 0.5 spore radius.

fascicles with 2 spreading and 1–2 pendent branches.

fascicles with 2 spreading and 1–2 pendent branches.