Flora of North America species comparison

leaves 0.8–1.1 mm, triangular-lingulate to lingulate, concave, spreading, apex broadly obtuse, hyaline cells fibrillose in apical region.

leaves 0.7–1 mm (to 1.2 mm in hemiisophyllous forms) elongate-triangular to triangular-lingulate, apex obtuse-erose, to apiculate; usually fibrillose at least apically; in hemiisophyllous forms spreading and in anisophyllous forms appressed;

hyaline cells often septate at base.

slender and tapering, often 5-ranked and decurved, leaves somewhat elongated at distal end.

moderately long and tapering, unranked to weakly 5-ranked, leaves not much elongated at distal end.

ovate-lanceolate, 1–1.7 mm, straight, slightly undulate and spreading;

margin entire, hyaline cells on convex surface with 1–5 pores in cell ends and free near apex, on concave surface with round wall thinnings in cell ends and angles; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface.

1–1.7 mm, ovate-lanceolate, undulate and recurved when dry;

hyaline cells on convex surface with 3–10 round pores per cell in the cell angles and free, on concave surface with round wall thinnings in the ends and angles.

dioicous.

unknown.

25–33 µm; smooth to finely papillose on both surfaces;

proximal laesura approximately 0.5 spore radius.

not seen.

fascicles with 2 spreading and mostly 1 pendent branch.;

branch stem green, cortex enlarged with conspicuous retort cells.

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

branch stem cortex enlarged and with conspicuous retort cells.