Lepidium ruderale L.
  • Sp. Pl.

Cite taxon page as 'WFO (2020): Lepidium ruderale L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000358755. Accessed on: 19 Sep 2020'

General Information

Herbs annual or biennial, (5-)10-35(-55) cm tall, fetid, puberulent with terete papillate trichomes. Stems erect or ascending, branched above. Basal leaves with petioles 1-2(-3) cm; leaf blade (1 or)2- or 3-pinnatisect, (1.5-)3-5(-6) × (0.5-)0.7-2(-2.5) cm, glabrous except for ciliate margin; ultimate lobes oblong, entire or rarely toothed, acute. Upper cauline leaves sessile; leaf blade linear, (0.4-)1-2(-3) cm × (0.3-)0.5-2.5(-3.5) mm, sparsely pubescent, base cuneate, not auriculate, margin usually entire, ciliate, apex obtuse to subacute. Fruiting pedicels slender, divaricate, straight or slightly curved, (1.5-)2-4(-5) mm, puberulent all around. Sepals oblong, 0.5-0.9(-1) × 0.2-0.4 mm, puberulent with papillate trichomes, margin and apex white. Petals absent, sometimes rudimentary and to 0.4 mm. Stamens 2; filaments 0.7-0.8 mm; anthers ovate, 0.1-0.2 mm. Fruit broadly elliptic, (1.5-)1.8-2.5(-3) × 1.5-2(-2.3) mm, narrowly winged apically; apical notch 0.1-0.2 mm; style to 0.1 mm, included in apical notch. Seeds brown, oblong or ovate-oblong, 1-1.5 × 0.6-0.7 mm, wingless, finely papillate; cotyledons incumbent. Fl. and fr. May-Jul. 2n = 16, 32*.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
    • 1
    • ]. 

    Annuals or biennials; (fetid); puberulent (trichomes cylind-rical). Stems simple from base, erect ascending, branched (several) distally, (0.5-)1-3.5 (-5.5) dm. Basal leaves rosulate; petiole 1-3.2(-5.3) cm; blade (1- or) 2- or 3-pinnatisect (lobes oblong), (1.5-)3-5(-7.2) cm, margins (of lobes) usually entire, rarely dentate. Cauline leaves sessile; blade linear, (0.4-)1-2(-3) cm × 0.5-2.5(-3.5) mm, base cuneate, not auriculate, margins entire. Racemes considerably elongated in fruit; rachis puberulent, trichomes straight, cylindrical. Fruiting pedicels divaricate to horizontal, straight, (terete), (1.5-)2-4(-5) × 0.1-0.15 mm, puberulent. Flowers: sepals oblong, 0.5-0.9(-1) × 0.2-0.4 mm; petals (absent or rudimentary), white, linear, 0.2-0.5 × 0.1 mm, claw absent; stamens 2, median; filaments 0.7-0.8 mm; anthers 0.1-0.2 mm. Fruits elliptic, (1.5-)1.8-2.5(-3) × 1.5-2(-2.3) mm, apically winged, apical notch 0.1-0.2 mm deep; valves thin, smooth, not veined, glabrous; style obsolete or to 0.1 mm, included in apical notch. Seeds oblong to ovate-oblong, 1-1.5 × 0.6-0.8 mm. 2n = 16, 32.

  • Provided by: [E].Flora of North America @ efloras.org
    • Source: [
    • 2
    • ]. 

    "Foetid, minutely hairy annual or biennial, 2–5 dm; basal lvs commonly bipinnately lobed; lower cauline lvs usually pinnatifid, the upper entire or dentate, rounded or obtuse at the tip; stamens 2; mature racemes loose, with 6–10 frs per cm; fr ovate to elliptic, generally broadest near or below the middle, 2–3 mm, three-fourths as wide, wingless; stigma included in the notch; seeds wingless; 2n=16. Native of Europe, intr. in waste places here and there in our range."

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 3
    • ]. 

    Distribution Map

    • Introduced distribution
    Introduced into
    • Southern America Brazil Bahia
    • Paraába
    • Paraní
    • Santa Catarina
    • Espirito Santo
    • Minas Gerais
    • Rio de Janeiro
    • São Paulo

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    Brazil Flora G (2014): Brazilian Flora 2020 project - Projeto Flora do Brasil 2020. v393.147. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro. Dataset/Checklist. doi:10.15468/1mtkaw
    • B Group Brazil Flora, REFLORA Program
    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.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora Of CHina @ efloras.org
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • D Missouri Botanical Garden
    Flora of North America @ efloras.org
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Flora of North America Association
    World Flora Online consortium
    World Flora Online Data. 2018.
    • F CC0 1.0 Universal (CC0 1.0).