Jeffersonia Barton
  • Trans. Amer. Philos. Soc. 3: 340. 1793.
  • [Named for Thomas Jefferson (1743-1826), third president of the United States]

Cite taxon page as 'WFO (2020): Jeffersonia Barton. Published on the Internet; Accessed on: 17 Feb 2020'

General Information

Herbs, perennial, deciduous, 1-4 dm, glabrous. Rhizomes short, producing 4-8 or more leaves per year. Aerial stems absent. Leaves alternate, 2-foliolate; petiole long, slender. Leaf blade reniform-orbiculate in overall outline, 1.5-18 cm, leaflet margins entire to shallowly lobed; venation palmate. Inflorescences terminal, solitary flowers borne on scapes. Flowers 4-merous, 15-30 mm; bracteoles absent; sepals caducous, (3-)4(-5), petaloid; petals 8, white [lavender]; stamens 8; anthers dehiscing by 2 apically hinged flaps; pollen exine striate; ovaries obovoid; placentation marginal; style central. Fruits capsulelike, brownish, obovoid, with transverse or oblique dehiscence, top forming reflexed lid. Seeds 10-25, red; aril white, not enclosing seed. x = 6.

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

    "Sep usually 4, uniseriate, early deciduous; pet usually 8, biseriate; ovary ovoid, with many ovules and a broad, sessile stigma; fr capsular, obovoid or pyriform, opening in the distal half by a horizontal cleft extending half way around it, the top forming a lid; smooth perennial herbs with a few basal lvs deeply divided into 2 obliquely half-ovate segments, the fls solitary on a naked scape. 2, the other in Manchuria."

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

    Included Species

    Other Local Names

    [Named for Thomas Jefferson (1743-1826), third president of the United States]


     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).