Flora of North America species comparison

pale green to straw-colored;

superficial cortical with a large round pore in distal portion of cell free from cell wall.

brown, superficial cortical layer with spiral reinforcing fibrils clearly visible, usually many pores per cell (1–6), comb-fibrils on interior wall.

with hyaline cell comb-lamellae visible on interior cortex wall, cortical cell end walls with conspicuous funnel projections more than 1/2 length of cell, superficial cortical wall aporose.

not 5-ranked, quite terete, long, and slender Branch fascicles with 1– 2 spreading and 1–2 pendent branches.

clavate and rounded at distal end.

spatulate to broad-spatulate, 0.8–1.5(–2) mm, strongly lacerate across the broad apex and often part way down the margins, border scarcely to strongly broadened at base (0.25 width of base or less);

hyaline cells rhomboid, efibrillose and often 1–2-septate.

1.1 × 1 mm; rarely hemiisophyllous;

hyaline cells non-ornamented, frequently septate.

ovate to ovate-lanceolate; 1.1–1.5(–2) mm, slightly concave, straight;

apex involute;

margins entire;

hyaline cells on convex surface with numerous pores along the commissures grading from small pores near leaf apex to large pores at base, concave surface with large round pores at leaf apex and along margins.

broadly ovate, 2.4 × 1.7 mm;

hyaline cells on convex surface with numerous round pores along the commissures, comb-lamellae on hyaline cell walls where overlying chlorophyllous cells; chlorophyllous cells broadly triangular in transverse section and well-enclosed on the convex surface.

with 2 spreading and 2 pendent branches.

often monoicous.

dioicous.

with pseudostomata.

20–27 µm, finely papillose on both surfaces;

proximal laesura less than 0.5 spore radius.

22–29 µm; finely papillose on both surfaces;

indistinct triradiate ridge on distal surface;

proximal laesura 0.5–0.6 spore radius.