Flora of North America species comparison

leaves generally larger than branch leaves, 1.3– 1.8 × 0.8–1 mm;

elliptic to lingulate-spatulate, widest above middle, hyaline cells nonseptate.

long-cylindrical, branch leaves terete to sometimes distinctly squarrose in shade forms.

1–1.4 mm, ovate to ovate-lanceolate, gradually narrowed to an involute tip, hyaline cells somewhat bulging on concave surface and nearly plane on convex surface, with 4–8 large, elliptic, unringed pores per cell on convex surface and 1–4 irregularly rounded pores per cell on concave surface, internal commissural walls smooth to rather strongly papillose, chlorophyllous cells ovate-triangular with the widest part at or close to the convex surface.

ovate-ligulate, apex broad, rounded, and truncate, hyaline cells with 20–40 small (less than 0.25 cell diameter) in mostly 2 rows.

dioicous.

21–26 µm;

proximal and distal surfaces smooth, papillae indistinct;

proximal laesura 0.5–0.6 spore radius.

fascicles typically with 3 spreading (sometimes 2) and 2 pendent branches.;

branch stems with single layer of cortical cells.