Flora of North America species comparison

to 6 pairs, ascending, usually approximate or overlapping except in shade forms, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair commonly much larger and more divided than adjacent pair, lobed to tip, basal pair oblong to oblong-lanceolate with lobed margins, remainder broadly spatulate with entire margins or 1 or more shallow lobes, apex rounded, venation pinnate.

to 7 pairs, somewhat ascending, approximate to slightly remote, 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 pairs, spatulate-ovate to narrowly ovate, divided to tip, ultimate segments squarish to linear, rounded to square to acute at apex, margins entire to lobed to fully dissected, apex rounded to acute, venation pinnate.

stalk 0–3(–10) mm, to 1/4 length of trophophore rachis;

blade ± gray-green, dull, oblong-linear to deltate, 1–2-pinnate, to 6 × 5 cm, firm.

stalk 0–5 mm, to 1/6 length of trophophore rachis;

blade dull, ± glaucescent green, oblong, 1–3-pinnate, to 10 × 9 cm, firm.

1–3 pinnate, 2–3 times length of trophophore.

1–3-pinnate, 1.3–2.4 times length of trophophore.

=180.

=180.