Flora of North America species comparison

pale green;

superficial cortex of 1–2 layers of thin-walled and well differentiated cells.;

stem leaves large, ovate to oblong-ovate, ca. 2 mm, more or less spreading;

apex rounded and serrulate;

hyaline cells fibrillose and often 1–septate, convex surface generally aporose, concave surface with 1–several round pores per cell in ends and angles.

leaves generally longer than branch leaves, 1.1–1.7 mm, lingulate to lingulate-spathulate, hyaline cells mostly non-septate.

unranked to slightly 5-ranked, often short and blunt at distal end.

terete.

ovate to oblong-quadrate, 1.2–2.5 mm, not undulate or recurved when dry, strongly toothed across apex and serrulate on margins;

hyaline cells with to 4 small round ringed pores at cell ends on convex surface, small round wall thinnings in the cell ends and angles on the concave surface; chlorophyllous cells trapezoidal in transverse section, more broadly exposed on the convex surface.

1–1.4 mm, broadly ovate, with a narrow involute tip;

hyaline cells only slightly bulging on either surface, in proximal half of leaf aporose on convex surface and with large faint pores on concave surface;

internal commissural walls distinctly papillose; chlorophyllous cells elliptical to elliptical-triangular in transverse section, enclosed on both surfaces with the widest part in the leaf middle.

monoicous.

dioicous.

38–48 µm;

both surfaces covered with fine to moderately coarse papillae;

proximal laesura less than 0.4 spore radius.

ca. 31 µm, ornamented by small somewhat amalgamated granulae.

fascicles with 1–2 spreading and 0–1 pendent branches.;

branch stems green, with cortex enlarged with conspicuous retort cells.

fascicles of 2 spreading and 1–2 hanging branches.;

branch stems with 1–2 layers of cortical cells.