Lepidium draba L.
  • Sp. Pl.


Cite taxon page as 'WFO (2020): Lepidium draba L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000361312. Accessed on: 29 May 2020'

General Information

Perennials; (rhizomatous); hirsute or glabrate. Stems often simple from base, erect or decumbent basally, branched (several) distally, (0.8-)2-6.5 (-9) dm. Basal leaves (early withered); not rosulate; petiole 1-4 cm; blade obovate, spatulate, or ovate, (1.5-)3-10(-15) cm × 10-40 mm, margins sinuate to dentate or entire. Cauline leaves sessile; blade ovate, elliptic, oblong, or lanceolate, oblanceolate, or obovate, (1-)3-9(-15) cm × (5-)10-20(-50) mm, base sagittate-amplexicaul or auriculate, margins dentate or entire, (surfaces pubescent or glabrous). Racemes (corymbose panicles), slightly or considerably elongated in fruit; rachis glabrous or puberulent, trichomes straight or curved, cylindrical. Fruiting pedicels ascending to horizontal, straight, (terete), 5-10(-15) × 0.2-0.3 mm, glabrous or sparsely puberulent adaxially. Flowers: sepals oblong to ovate, 1.5-2.5 × 0.7-1.2 mm; petals white, obovate, (2.5-)3-4(-4.5) × (1-)1.3-2(-2.2) mm, claw 1-1.7 mm; stamens 6; filaments 2-3 mm, (glabrous); anthers 0.4-0.5 mm. Fruits (indehiscent), cordate to subreniform, (2-)2.5-3.7(-4.3) × (3.2-)3.7-5(-5.6) mm, apically (obtuse to subacute), not winged, apical notch absent; valves thin, smooth, reticulate-veined, glabrous; style (0.6-)1-1.8(-2) mm. Seeds ovate, 1.5-2.3 × 1-1.3 mm. 2n = 32, 64.

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

    Diagnostic Description

    Apparently not a weed.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Morphology

    Erect herbs with annual shoots from a perennial root, 15-60(-90) cm high, finely retrorsely puberulous in the lower half, glabrous above. Basal leaves dying off soon, petiolate, ± obovate, sublyrate or sinuately lobed, sometimes ± canescent. Stem leaves up to 10 cm long, ovate-oblong, sessile, sagittate, amplexicaul, acute, sinuate-dentate, the lower ones thinly puberulous on the lower surface, the upper ones glabrous. Inflorescence dense. Sepals 1.5-2 mm long. Petals 3-4 mm long, obovate, clawed, white. Siliculae on c. 1 cm long, ± reflexed or horizontally spreading pedicels, 3-4.5 mm long, 3.5-5 mm broad, obcordate, inflated, indehiscent, the valves faintly reticulate; style 1-1.5 mm long, slender; stigma capitate. Seeds 2-2.25 x 1.2-1.5 mm, subcompressed, almost smooth, immarginate.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 2
    • ]. 

    Perennial herb, up to 0.9 m high. Stems erect, several annually from rootstock; finely retrorsely puberulous in lower half, glabrous above. Leaves with basal ones dying off soon, petiolate; blade obovate, sublyrate or sinuately lobed; stem leaves sessile, ovate-oblong, up to 100 mm long, amplexicaul, base sagittate, apex acute, margins sinuate, dentate, the lower ones thinly puberulous on lower surface, upper ones glabrous. Flowers: in a dense, ebracteate, corymbose panicle; sepals 1.5-2.0 long; petals obovate, 3-4 mm long, white; Nov.-Feb. Fruit with pedicels ± reflexed or horizontally spreading; siliquae obcordate, 3.0-4.5 mm long, inflated.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Habitat

    Dry Grassland.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

    Distribution

    Native to Europe.

  • Provided by: [B].e-Flora of South Africa
    • Source: [
    • 3
    • ]. 

      Bibliography

     Information From

    Brassicaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute. http://ipt.sanbi.org.za/iptsanbi/resource?r=flora_descriptions&v=1.21
    • B All Rights Reserved
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    '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.
    • C Flora of North America Association
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • D CC0 1.0 Universal (CC0 1.0).