Flora of North America species comparison

leaves triangular-lingulate to lingulate, 0.7–1.4 mm;

apex rounded-obtuse and weakly denticulate;

hyaline cells nonseptate, mostly efibrillose, and, if porose, with more pores per cell on the concave surface (3–6) than on the convex surface (0–2).

leaves lingulate-triangular to triangular-lingulate, equal to or less than 1.2 mm, more or less spreading;

apex obtuse;

hyaline cells mostly fibrillose and nonseptate.

somewhat curved, leaves spreading.

straight to distinctly curved, leaves becoming substantially longer at distal end of the branch.

ovate to ovate-lanceolate, 1.2–2 mm;

subsecund;

hyaline cells with numerous tiny pores in a continuous line along the commissures on the convex surface, no or scattered pores on the concave surface.

ovate-lanceolate, 1.5–2 mm, straight to slightly subsecund, only slightly undulate and recurved if at all;

margin entire;

hyaline cells on convex surface with numerous small free pores, on concave surface with numerous round free pores, cells relatively short in basal region (similar to mid region); chlorophyllous cells ± triangular in transverse section, just reaching concave surface or slightly enclosed.

dioicous.

dioicous.

exserted, with scattered pseudo-stomata.

22–28 µm;

papillose on both surfaces;

proximal laesurae more than 0.5 spore radius.

25–32 µm, finely papillose on both surfaces.

fascicles with 2–3 spreading and 2–3(4) pendent branches.

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

branch stems green, with cortex enlarged with conspicuous retort cells.