Flora of North America species comparison

leaves 0.7–1 mm (to 1.2 mm in hemiisophyllous forms) elongate-triangular to triangular-lingulate, apex obtuse-erose, to apiculate; usually fibrillose at least apically; in hemiisophyllous forms spreading and in anisophyllous forms appressed;

hyaline cells often septate at base.

leaves elongate-triangular, 1.3–1.5 mm; often spreading;

apex obtuse;

hyaline cells mostly efibrillose and 1–septate in proximal half and lateral portions of leaves.

moderately long and tapering, unranked to weakly 5-ranked, leaves not much elongated at distal end.

unranked, often blunt and with leaves moderately elongated at distal end.

1–1.7 mm, ovate-lanceolate, undulate and recurved when dry;

hyaline cells on convex surface with 3–10 round pores per cell in the cell angles and free, on concave surface with round wall thinnings in the ends and angles.

ovate to broadly ovate at branch base and becoming ovate-lanceolate at branch tip; 1.2–1.5 mm; undulate when dry, margins serrulate;

hyaline cells of convex surface with 0–5 pores or pseudopores at cell apex, concave surface with faint round wall thinnings in cell angles, but may be absent, chlorophyllous cells trapezoidal in transverse section, exposed more broadly on convex surface.

unknown.

probably dioicous.

not seen.

not seen.

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

branch stem cortex enlarged and with conspicuous retort cells.

fascicles with 2–3 spreading and 0–2 pendent branches.;

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