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(–9) pairs, spreading, usually remote, separated 1–3 times pinna width, in some populations irregularly and extensively fused with considerable webbing along rachis, 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 the adjacent pair, mostly linear to linear-spatulate, undivided to tip, margins crenulate to dentate, usually notched or cleft into 2 or several segments, apex rounded to acute, venation like ribs of fan, midrib absent.

stalk 0–1 mm;

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

stalk usually absent but sometimes broadly tapered to 10 mm in forms with coalesced proximal pinnae;

blade glaucescent, oblong, longitudinally folded when alive, 1-pinnate, to 4 × 1.3 cm, very fleshy.

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).

1(–2, rarely)-pinnate, 1–1.5 times length of trophophore.

=90.

=90.