Botrychium dissectum Spreng.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Plants 10–30+ cm; bud pilose, its blade and sporophore reflexed; blade inframedial or nearly basal on an evident 3–7 cm stalk, somewhat coriaceous, persistent, often reddish when first expanding and tending to turn bronzy in autumn, mostly 3–4 times pinnate but highly variable, sometimes finely divided throughout, more often unequally dissected with the terminal segment of the principal divisions tending to be more elongate and less divided than the other segments; primary and secondary segments often crowded; ultimate segments mostly acute or acuminate, but with rounded or subtruncate base; fertile spike 2–10 cm, long-stalked; 2n=90. In a wide range of habitats; N.S. and N.B. to Wis. and se. Minn., s. to Fla. and La. Aug.–Nov. (B. d. var. obliquum, the more common phase with less strongly dissected lvs)