Flora of North America species comparison

leaves 1.2 mm or more, broadly triangular to triangular-lingulate, 1.2 or more, apex acute, border broad at base (more than 0.25 width);

hyaline cells mostly efibrillose, 1–2-septate.

leaves to 1.7 × 1 mm, occasionally longer; rarely hemiisophyllous;

hyaline cells non-ornamented, nonseptate.

uncrowded, 5-ranked.

long and tapering, leaves ± imbricate to spreading in shade forms.

ovate-lanceolate, 0.7 mm or more, straight, concave, loosely involute from apex to middle or near base;

concave surface with few (2–4) small, rounded, or elliptic pores, especially in cell angles, concave surface aporose or with 1–2 pores at cell ends.

broadly ovate, 2.2 × 1.3 mm, hyaline cells non-ornamented, convex surface with elliptic pores along the commissures, chlorophyllous cells isosceles-triangular to ovate-triangular in transverse section and just enclosed to just exposed on the convex surface;

end wall not thickened.

unknown.

dioicous.

with numerous pseudostomata.

unknown.

24–33 µm, surface finely papillose to smooth, distal surface with distinct bifurcated Y-mark sculpture;

proximal laesura more than 0.6 spore radius.

fascicles with 2 spreading and 1 pendent branch.

fascicles with 2 spreading and 2 pendent branches.;

branch stems with hyaline cells non-ornamented;

no or weak funnel-like projections on the interior end walls, often with 1 large pore per cell on superficial cell walls.