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 1.2–1.6 × 1 mm; rarely hemiisophyllous;

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

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

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

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.

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.

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

proximal laesura approximately 0.5 spore radius.

23–28 µm; coarsely granulate on both surfaces;

proximal laesura more than 0.50 spore radius.

fascicles with 2 spreading and mostly 1 pendent branch.;

branch stem green, 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.