Caulophyllum thalictroides (L.) Michx.
  • Fl. Bor.-Amer.
  • Blue cohosh, squaw-root, papoose-root, caulophylle faux-pigamon

Cite taxon page as 'WFO (2021): Caulophyllum thalictroides (L.) Michx. Published on the Internet; Accessed on: 18 Sep 2021'

General Information

Stems 2-9 dm. Leaves: 1st leaf (3-)4-ternate; 2d leaf (2-)3-ternate; leaflets 3-8 × 2-10 cm. Inflorescences with 5-70 flowers. Flowers: bracteoles 1-3 mm; sepals yellow, purple, green, 3-6 2-3 mm, apically revolute; petals 1-2.5 mm; stamen filaments 0.5-1.5 mm; pistil 1-3 mm; style 0.25-1 mm. 2 n = 16.

  • Provided by: [C].Flora of North America @
    • Source: [
    • 1
    • ]. 

    "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.)"

  • Provided by: [B].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Other Local Names

    Blue cohosh, squaw-root, papoose-root, caulophylle faux-pigamon


     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of North America @
    'Flora of North America @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • C Flora of North America Association
    World Flora Online consortium
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).