Geum macrophyllum Willd.
  • Enumeratio Plantarum Horti regii botanici berolinensis


Cite taxon page as 'WFO (2021): Geum macrophyllum Willd. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0001002865. Accessed on: 22 Oct 2021'

General Information

"Stem to 1 m, hirsute, especially below; basal lvs long- petioled, the terminal segment rotund to reniform, 5–12 cm wide, often 3–lobed, the lateral few, much smaller, interspersed with several to many minute lfls; upper lvs short-petioled to sessile, deeply 3-lobed or 3-foliolate; pet yellow, 4–7 mm, somewhat exceeding the sep; achenes minutely pubescent throughout, hirsute about the summit; basal segment of the style minutely glandular, the terminal segment minutely pubescent; 2n=42. Moist woods and rocky ledges, sometimes weedy; Nf. and Lab. to Alas. and e. Asia, s. to Me., Vt., N.Y., Mich., Minn., and Calif. May–July. Var. perincisum (Rydb.) Raup, occurring from n. Mich. w. and n., has relatively strongly dissected lvs, the terminal lfl of the middle cauline ones 3-cleft nearly to the base with the lobes again cleft or laciniate. (G. oregonense) The widespread var. macrophyllum has less dissected lvs, the terminal lfl of the middle cauline ones 3-cleft to about the middle with the lobes merely toothed."

  • Provided by: [A].New York Botanical Garden
    • Source: [
    • 1
    • ]. 

      Bibliography

    • 1 "Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp."
    • 2 Enumeratio Plantarum Horti regii botanici berolinensis

     Information From

    New York Botanical Garden
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    • A Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Rosaceae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • B CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • C CC0 1.0 Universal (CC0 1.0).