Flora of North America species comparison

leaves triangular, 1–1.7 mm, apex acute to slightly obtuse;

leaves usually appressed;

margins entire;

hyaline cells fibrillose and usually septate at base and sides.

leaves triangular-lingulate to ovate-lingulate, 0.8–0.9 mm, apex rounded, straight;

hyaline cells mostly non-septate, fibrillose in distal 1/3–2/3 of leaf, a few ringed pores at corners of cells and along commissures on convex surface, ringed pores along the commissures on the concave surface in greater numbers than on convex surface.

unranked, long and tapering, leaves greatly elongated at distal end.

short, not turgid.

ovate-lanceolate to lanceolate, 3–5.5 mm; straight but sometimes slightly falcate-secund; weakly undulate and recurved when dry;

margins entire;

hyaline cells on convex surface with 0–1 pore per cell, on concave surface with round wall thinnings on the apices and angles; chlorophyllous cells narrowly triangular in transverse section and just enclosed on the concave surface.

broad-ovate to ovate-lanceolate, 0.9–2.1 mm, straight;

hyaline cells with numerous ringed pores (10–20) along the commissures on the convex surface, a few pseudopores and ringed pores (less than 8 per cell) occur on the cell angles on the concave surface.

dioicous.

dioicous.

exserted, with few pseudostomata.

26–29 µm;

both surfaces distinctly papillose, appearing pusticulate to irregularly pusticulate;

proximal laesura mostly less than 0.5 spore radius.

36–39 µm; coarsely papillose on both surfaces;

proximal laesura less than or equal to 0.5 spore radius.

fascicles with 2 spreading and 2 pendent branches.;

branch stems green;

cortex enlarged with conspicuous retort cells.

fascicles with 2–3 spreading and 1–2 pendent branches.