Bot. Not. 1854: 68. 1854.
Trophophore stalk 0–1 mm; blade dull to shiny green to dark green, deltate, 1–2-pinnate, to 6 × 7 cm. Pinnae 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. Sporophores 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). 2n =90.
Alta., B.C., N.B., N.S., Nfld. and Labr. (Nfld.), Ont., Que., Sask., Yukon, Alaska, Ariz., Colo., Conn., Idaho, Ky., Maine, Mass., Mich., Minn., Mont., N.H., N.J., N.Mex., N.Y., Nev., Ohio, Oreg., Pa., R.I., Tenn., Utah, Va., Vt., W.Va., Wash., Wis., Wyo., Eurasia.
Subspecies 2 (2 in the flora).
|1||Trophophore blade green to pale yellow-green, broad, coarse, succulent; middle and terminal segments usually more than 2 mm wide exclusive of lobes.||Botrychium lanceolatum subsp. lanceolatum|
|1||Trophophore blade dark green, slender, delicate but firm; middle segments usually less than 2 mm wide exclusive of lobes.||Botrychium lanceolatum subsp. angustisegmentum|