Flora of North America species comparison

leaves triangular to lingulate-triangular, 0.8–1.3 mm; typically appressed;

apex acute to apiculate;

hyaline cells efibrillose and nonseptate to rarely septate.

leaves to 1.7 × 1 mm, occasionally longer; rarely hemiisophyllous;

hyaline cells non-ornamented, nonseptate.

straight and somewhat tapered, usually 5-ranked;

leaves little elongate at the distal branch end.

long and tapering, leaves ± imbricate to spreading in shade forms.

ovate to narrowly ovate-lanceolate; (1.1–)1.4–1.8(–3.1) mm; slightly undulate and sharply recurved when dry, somewhat subsecund;

margins entire;

hyaline cells on convex surface with usually 1 round pore on apical end, on concave surface with wall thinnings in the cell ends and angles; chlorophyllous cells broadly triangular in transverse section and very deeply enclosed on the concave surface.

broadly ovate, 2.2 × 1.3 mm, hyaline cells non-ornamented, convex surface with elliptic pores along the commissures, chlorophyllous cells isosceles-triangular to ovate-triangular in transverse section and just enclosed to just exposed on the convex surface;

end wall not thickened.

dioicous.

dioicous.

with numerous pseudostomata.

19–25 µm; finely papillose on both surfaces.

24–33 µm, surface finely papillose to smooth, distal surface with distinct bifurcated Y-mark sculpture;

proximal laesura more than 0.6 spore radius.

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

branch stems green but often reddish at proximal end, with cortex enlarged with conspicuous retort cells.

fascicles with 2 spreading and 2 pendent branches.;

branch stems with hyaline cells non-ornamented;

no or weak funnel-like projections on the interior end walls, often with 1 large pore per cell on superficial cell walls.