Flora of North America species comparison

leaves 1.4–1.8 mm, elongate-triangular, lingulate-triangular, hemiisophyllous forms elongate triangular-ovate, 1.4–1.8 mm, apex usually conspicuously toothed, border narrow at base (less than 0.25 width);

hyaline cells narrowly rhombic to S-shaped, can be efibrillose and aporose but more commonly fibrillose and porose, 0–1-septate.

leaves triangular to lingulate-triangular, 0.8–1.3 mm; typically appressed;

apex acute to apiculate;

hyaline cells efibrillose and nonseptate to rarely septate.

turgid and terete, leaves, not 5-ranked.

straight and somewhat tapered, usually 5-ranked;

leaves little elongate at the distal branch end.

ovate, 1.1–1.7 mm, slightly concave, straight, apex weakly involute and conspicuously toothed;

hyaline cells on the convex surface with round to elliptic pores along the commissures, grading from moderate-sized pores near apex to large pores at leaf base, concave surface with large round pores throughout.

ovate to narrowly ovate-lanceolate; (1.1–)1.4–1.8(–3.1) mm; slightly undulate and sharply recurved when dry, somewhat subsecund;

margins entire;

hyaline cells on convex surface with usually 1 round pore on apical end, on concave surface with wall thinnings in the cell ends and angles; chlorophyllous cells broadly triangular in transverse section and very deeply enclosed on the concave surface.

uncertain, monoicous or dioicous or possibly both.

dioicous.

22–25 µm, finely roughened.

19–25 µm; finely papillose on both surfaces.

fascicles with 2 spreading and 1–2 pendent branches.

fascicles with 2 spreading and 2–3 pendent branches.;

branch stems green but often reddish at proximal end, with cortex enlarged with conspicuous retort cells.