Lactuca floridana (L.) Gaertn.
  • Fruct. Sem. Pl. 2: 362. 1791

Cite taxon page as 'WFO (2022): Lactuca floridana (L.) Gaertn. Published on the Internet; Accessed on: 25 Jan 2022'

General Information

Annuals or biennials, 25–150(–200+) cm. Leaves on proximal 2/3–3/4 of each stem; blades of undivided cauline leaves oblong, ovate, or elliptic, margins entire or denticulate, midribs sometimes sparsely pilose. Heads in (± pyramidal) paniculiform arrays. Involucres (8–)10–12+ mm. Phyllaries usually reflexed in fruit. Florets 10–15(–25+); corollas bluish or whitish, seldom deliquescent. Cypselae: bodies brown (often mottled), ± compressed-lanceoloid to -fusiform, 4–5 mm, beaks ± stout, 0.1–0.5(–1) mm, faces 5–6-nerved; pappi white, 4–5 mm. 2n = 34.

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

    "Robust, leafy-stemmed annual or biennial 5–20 dm; lvs mostly petiolate and not sagittate at the base, often hairy along the main veins beneath, otherwise glabrous or nearly so, the blade 8–30 × 2.5–20 cm, from elliptic (or cordate) and merely toothed to evidently pinnatifid; heads numerous in an ample, paniculiform infl, with 11–17(–27) blue (white) fls; invol 9–14 mm in fr; achenes 4–6 mm, narrowed upward, beakless or with a stout beak sometimes a third as long as the body, several-nerved on each face, tending to be thickened on the margins; pappus white; 2n=34. Thickets, woods, and moist, open places; N.Y. to Fla., w. to Minn., Kans., and Tex. June–Sept. (L. villosa, the form with merely toothed lvs)"

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


     Information From

    CC0 1.0 Universal (CC0 1.0).
    • 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).