Rudbeckia L.
  • Sp. Pl. : 906 (1753)

Cite taxon page as 'WFO (2022): Rudbeckia L. Published on the Internet; Accessed on: 26 Sep 2022'

General Information

Heads radiate, the rays mostly 5–21, neutral, yellow or orange to sometimes anthocyanic, or rarely absent and the heads discoid; invol of subequal or irregularly unequal, green and ± herbaceous, mostly spreading or reflexed bracts in 2–3 series; receptacle enlarged, conic or columnar, chaffy, its bracts partly enfolding the achenes, not spinescent, but sometimes awn-pointed; disk-fls perfect and fertile, narrowed to a ± distinct tube at base; style- branches flattened, with very short and blunt or elongate and acuminate, externally hairy appendage, without well marked stigmatic lines; achenes ± quadrangular, glabrous; pappus a short crown, or none; herbs with alternate, entire to pinnatifid lvs. 16, mainly U.S.

  • Provided by: [B].Manual of Vascular Plants of Northeastern US and Canada
    • Source: [
    • 1
    • ]. 

    Included Species


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

     Information From

    Asteraceae. The daisy family. World Flora Online Data. 2022.
    • A CC0 1.0 Universal (CC0 1.0).
    Manual of Vascular Plants of Northeastern US and Canada
    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
    World Flora Online Consortium
    World Flora Online Data. 2017.
    • C CC0 1.0 Universal (CC0 1.0).