Flora of North America species comparison

leaves to 1.1 × 0.7 mm, commonly hemiisophyllous;

hyaline cells non-ornamented, mostly 1–2-septate.

brown, superficial cortical cells aporose.;

stem leaves lingulate, 1.1–1.2 mm, apex slightly apiculate to mostly broad and erose to lacerate, border only slightly broadened at base;

hyaline cells rhomboid and 0–1-septate.

short and blunt at distal end, leaves loosely spreading.

more or less 5-ranked.

ovate, to 2.2 × 1.1 mm; ovate, hyaline cells non-ornamented, on proximal half of convex surface with small ringed pores or pseudopores in groups of three where the corners join and pseudopores along the commissures; chlorophyllous cells narrowly rectangular, lenticular to narrowly trapezoidal in transverse section; exposed equally on both surfaces or more broadly on concave surface;

end walls not thickened.

0.95–1.3 mm, ovate to ovate-lanceolate, concave, straight to slightly subsecund, apex involute;

hyaline cells on convex surface with numerous surface with numerous round to elliptic pores along the commissures, grading from large pores at the base to a mixture of small and tiny (2 µm) at the apex, concave surface with a few large, round pores/cell in lower side regions.

dioicous.

unknown.

with numerous pseudostomata.

25–39 µm;

surface smooth to irregularly and finely papillose;

indistinct Y-mark on distal surface;

proximal laesura more than 0.6 spore radius.

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

branch stems with hyaline cells non-ornamented, no or weak funnel-like projection of end walls of cortical cells, cortical cells with one large pore per cell on superficial wall.

fascicles with 2 spreading and 1 pendent branch.