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 to 1.2 × 0.8 mm; rarely hemiisophyllous;

hyaline cells mostly nonseptate, comb-lamellae usually absent, but sometimes weak.

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

short and blunt-tipped, leaves spreading.

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 to ovate-elliptical, 1.6–2.2 × 1 mm;

hyaline cells on proximal half of convex surface with round to elliptic pores along the commissures;

comb-lamellae on hyaline cell wall where overlying chlorophyllous cells; chlorophyllous cells broadly triangular in transverse section and well-enclosed on convex surface, end wall not thickened.

dioicous.

dioicous.

unknown.

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

proximal laesura approximately 0.5 spore radius.

unknown.

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 hyaline cells non-ornamented, no or weak funnel-like projections on the end walls of cortical cells, cortical cell walls usually with large round pores.