Flora of North America species comparison

leaves isophyllous, ovate to ovate-lanceolate, 2.2–2.8 mm;

apex rounded;

hyaline cells nonseptate, convex surface with 6–12 pores per cell along commissures, concave surface aporose.

leaves triangular, ovate-triangular to triangular-lingulate, 1–1.3 mm; appressed to spreading;

apex obtuse, hyaline cells usually fibrillose near apex.

straight and short.

straight to somewhat curved, leaves moderately elongate at distal end.

ovate, 1.3–1.7 mm;

hyaline cells on convex surface with 8–18 elliptic pores more than 8 µm, concave surface aporose.

ovate-lanceolate; usually more than 2 mm; straight; weakly undulate and slightly recurved when dry, margins entire;

hyaline cells on convex surface with numerous small free pores in proximal 2/3 of leaf and in apical region with numerous pseudopores along commissures, on concave surface with numerous round free pores;

cells relatively long and narrow in basal region, much longer than in mid region; chlorophyllous cells triangular in transverse section and well-enclosed on concave surface.

unknown.

dioicous.

not seen.

not seen.

29–33 µm;

both surfaces very smooth;

proximal laesura long, more than 0.6 spore radius.

fascicles nearly all with 2 spreading branch only.

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

branch stems green, cortex enlarged with conspicuous retort cells.