Flora of North America species comparison

to 5 pairs, usually remote, horizontal to ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, undivided except in proximal 2/3–3/4.

to 9 pairs, spreading, mostly overlapping except in shaded forest forms, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, broadly fan-shaped, undivided to tip, margins mainly entire or undulate, rarely dentate, apical lobe usually cuneate to spatulate, notched, approximate to adjacent lobes, apex rounded, venation like ribs of fan, midribs absent.

stalk 2–15 cm, 1.5–2.5 times length of blade rachis;

blade dull bluish green, ± plane, 2–3-pinnate, to 15 × 20 cm, ± leathery.

stalk 0–1 mm;

blade dark green, oblong, 1-pinnate, to 10 × 4 cm, thick, fleshy.

obliquely ovate, margins finely crenulate to denticulate, apex rounded to acute, venation pinnate.

2–3-pinnate, 1.5–2.5 times length of trophophore.

1–2-pinnate, 0.8–2 times length of trophophore.

=90.

=90.