Achillea 


Cite taxon page as 'WFO (2020): Achillea . Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000000214. Accessed on: 05 Dec 2020'

General Information

"Heads radiate, the rays 3–13, pistillate and fertile (rarely neutral), white, sometimes pink or yellow, short and broad; invol bracts imbricate in several series, dry, with scarious or hyaline margins and often greenish midrib; receptacle conic or convex, chaffy; disk-fls mostly 10–75, perfect and fertile; style-branches flattened, truncate, penicillate; achenes compressed parallel to the invol bracts, callous-margined, glabrous; pappus none; perennial herbs with alternate, subentire to pinnately dissected lvs and several or many relatively small heads in a ± corymbiform infl. 75, N. Hemisphere, mainly Old World.In addition to the following spp. [A. ptarmica; A. sibirica; & A. millefolium], A. tomentosa L., 2–4 dm, with bright yellow fls, casually escapes from cult."

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

    Included Species

      Bibliography

    • 1 "Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp."

     Information From

    Compositae
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    New York Botanical Garden
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    World Flora Online consortium
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    World Flora Online Data. 2018.
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