Flora of North America species comparison

to 5 pairs, ascending, approximate, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, linear to broadly lanceolate, entire to divided to tip, margins with distinct lobes or segments, apex acute to rounded, venation pinnate.

to 5 pairs, well separated, slightly descending to ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs;

basal pinnae remotely alternate and long-stalked (basal pinnae in all other botrychiums are opposite to subopposite and short-stalked), divided to tip.

stalk 0–1 mm;

blade dull to shiny green to dark green, deltate, 1–2-pinnate, to 6 × 7 cm.

stalk 2–15 cm, 0.8–1.2 times length of trophophore rachis;

blade somewhat dull gray-green, plane, 3-pinnate, to 18 × 26 cm, herbaceous.

1–3-pinnate, 1–2.5 times length of trophophore, divided into several equally long branches (all other botrychiums have a single stalk or 1 dominant and 2 smaller).

2-pinnate, 1.2–2.5 times length of trophophore.

ovate to fan-shaped, margins uniformly denticulate, apex rounded, venation like ribs of fan with short midrib.

=90.

=180.