Caulophyllum thalictroides (L.) Michx.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Berberidaceae
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Scientific Name
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Description
Species Description - Erect, 3–8 dm, glaucous when young; lfls obovate- oblong, 2–5-lobed above the middle, 5–8 cm at maturity; infl a small, panicle-like or raceme-like cyme, 3–6 cm; fls yellowish-green or greenish-purple, the slender, spreading, somewhat twisted sep 1 cm; seeds bitter, dark blue, 5–8 mm, on stalks nearly as long; 2n=16. Rich, moist woods; N.B. to Ont. and Man., s. to S.C., Ala., and Mo. Apr., May. Some authors recognize 2 largely sympatric vars. Var. thalictroides has variously yellow, purple or green sep mostly 4–5 mm. Var. giganteum Farw. blooms 2 weeks earlier and has fewer fls larger in all parts, the consistently purple sep 6–8 mm. (C. g.)