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 1.2–1.6 × 1 mm; rarely hemiisophyllous;

hyaline cells nonseptate or more typically mostly septate, comb-lamellae present on interior wall.

straight and somewhat tapered, usually 5-ranked;

leaves little elongate at the distal branch end.

clavate, tapering to short point, tightly imbricate at proximal end to somewhat spreading at distal end in less compact 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.

ovate-elliptical to elliptical, 1.5–2.1 × 0.8–1.4 mm;

hyaline cells on convex surface with numerous moderate-sized round pores along the commissures, comb-lamellae present throughout most of leaf; chlorophyllous cells broadly triangular in transverse section and well-enclosed on the convex surface, end wall not thickened.

dioicous.

dioicous.

with scattered pseudostomata.

19–25 µm; finely papillose on both surfaces.

23–28 µm; coarsely granulate on both surfaces;

proximal laesura more than 0.50 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 1 pendent branch.;

branch stems with cortical cell comb-lamellae visible on interior wall, conspicuous funnel-like projection on interior end walls extending to next cell less than one half its length, pores in superficial wall restricted to leaf bases.