Thlaspi arvense L.
  • Sp. Pl.
  • Fanweed, field pennycress, stinkweed

Cite taxon page as 'WFO (2020): Thlaspi arvense L. Published on the Internet; Accessed on: 26 Sep 2020'

General Information

1. Thlaspi arvense L., Sp. Pl. 646 (1753). Lectotipo (designado por Jafri, 1973): “Habitat in Europae agris”, Herb. Linn. 825.2 (LINN!). Ilustr.: Rich, Bot. Soc. Brit. Isles Handb. 6: 241 (1991).

Por I.A. Al-Shehbaz y S. Fuentes-Soriano.

Hierbas completamente glabras, frecuentemente glaucas, fétidas cuando se maceran. Tallos (9-)15-55(-80) cm, erectos. Hojas basales 1-5 × 0.4-2.3 cm, oblanceoladas, espatuladas u obovadas, enteras o dentadas; pecíolo 0.5-3 cm; hojas caulinares (0.5-)1.5-4(-8) × (0.2-)0.5-1.5(-2.5) cm, oblongas, la base sagitada o auriculada, los márgenes dentados o enteros, sésiles. Pedicelos en fruto (0.5-)0.9-1.3(-1.5) cm, delgados, divaricados, rectos o ligeramente curvados hacia arriba. Sépalos (1.5-)2-3(-3.3) mm, ovados u oblongos, los márgenes blancos; pétalos (2.4-)3-4.5(-5) × (0.8-)1.1-1.6 mm, espatulados, unguiculados, la uña c. 1 mm, blancos, el ápice obtuso o emarginado; óvulos 6-16 por ovario. Frutos (6-)9-20 × (5-)7-20 mm, obovados o suborbiculares, la base obtusa o redondeada, el ápice profundamente emarginado con la escotadura apical de c. 5 mm de profundidad; alas 1-1.5 mm de ancho en la base, 3.5-5 mm de ancho apicalmente; estilo ausente o 0.1-0.3 mm; semillas (1.2-)1.6-2(-2.3) × 1.1-1.3 mm, ovoides, pardo-negruzcas, concéntricamente estriadas. n = 7. Floración ene.-mar. Orillas de caminos, jardines, campos cultivados, sitios alterados. G (Véliz MV 14145, MO); H (Valerio 3717, F). c. 900 m. (Nativa de Eurasia; maleza cosmopolita.)

  • Provided by: [H].Flora Mesoamericana
    • Source: [
    • 1
    • 4
    • ]. 

    Herbs annual, (9-)15-55(-80) cm tall, glabrous throughout, often glaucous, fetid when crushed. Stems erect, simple or branched above. Petiole of basal leaves 0.5-3 cm; leaf blade oblanceolate, spatulate, or obovate, 1-5 × 0.4-2.3 cm, base attenuate or cuneate, margin entire, repand, or coarsely toothed, apex rounded. Middle cauline leaves sessile, oblong, (0.5-)1.5-4(-8) × (0.2-)0.5-1.5(-2.5) cm, base sagittate or auriculate, margin dentate, repand, or entire, apex rounded, obtuse, or subacute. Fruiting pedicels (0.5-)0.9-1.3(-1.5) cm, slender, divaricate, straight or slightly curved upward. Sepals ovate or oblong, (1.5-)2-3(-3.3) × 1-1.5 mm, not saccate, margin white. Petals white, spatulate, (2.4-)3-4.5(-5) × (0.8-)1.1-1.6 mm, narrowed to a clawlike base ca. 1 mm, apex obtuse or emarginate. Filaments (1-)1.5-2 mm; anthers ovate, 0.3-0.5 mm. Ovules 6-16 per ovary. Fruit obovate or suborbicular, (0.6-)0.9-2 × (0.5-)0.7-2 cm, base obtuse or rounded, apex deeply emarginate and apical notch ca. 5 mm deep; wings 1-1.5 mm wide at base, 3.5-5 mm wide apically; style absent or 0.1-0.3 mm. Seeds blackish brown, ovoid, (1.2-)1.6-2(-2.3) × 1.1-1.3 mm, concentrically striate. Fl. and fr. Mar-Oct. 2n = 14*.

  • Provided by: [G].Flora Of CHina @
    • Source: [
    • 2
    • ]. 

    Plants (sometimes glaucous), glabrous throughout. Stems (0.9-)1.5-5.5(-8) dm. Basal leaves not rosulate; petiole 0.5-3 cm; blade oblanceolate, spatulate, or obovate, 1-5 cm × 4-23 mm, base attenuate or cuneate, margins entire, repand, or coarsely dentate, apex rounded. Cauline leaves: blade oblong, (0.5-)1.5-4 (-8) cm × (2-)5-15(-25) mm, apex rounded, obtuse, or subacute. Fruiting pedicels straight or slightly upcurved, (5-)9-13(-15) mm. Flowers: sepals (1.5-) 2-3(-3.3) × 1-1.5 mm; petals (2.4-)3-4.5(-5) × (0.8-) 1.1-1.7 mm, narrowed to clawlike base (ca. 1 mm), apex obtuse or emarginate; filaments (1-)1.5-2.2 mm; anthers 0.3-0.5 mm. Fruits obovate or suborbicular, (0.6-)0.9-2 cm × (5-)7-20 mm, base obtuse or rounded, apex deeply emarginate, notch ca. 5 mm deep; wings broad throughout, 1-1.5 mm wide basally, 3.5-5 mm wide apically; ovules 6-16 per ovary; style 0.1-0.3 mm. Seeds (1.2-)1.6-2(-2.3) × 1.1-1.3 mm, concentrically striate. 2n = 14.

  • Provided by: [F].Flora of North America @
    • Source: [
    • 3
    • ]. 

    "Glabrous annual or winter-annual 1–5 dm; cauline lvs sessile, oblong to lanceolate, entire or few-toothed, bearing at base 2 narrow, divergent, acute auricles 1–5 mm; fls 3 mm wide, the pet twice as long as the sep; mature pedicels ascending; frs orbicular to broadly elliptic, 10–17 mm, winged all around, deeply (2–3 mm) notched; seeds concentrically ridged-striate, numerous in each locule; 2n=14. Native of Europe, commonly established in waste places throughout much of N. Amer. Apr.–June."

  • Provided by: [I].New York Botanical Garden
    • Source: [
    • 5
    • ]. 

    Diagnostic Description

    In the National Herbarium, Pretoria, is one sheet of Thlaspi alpinum Crantz, collected by Gilfillan sub Galpin 6196, Johannesburg, Jan.-Feb. 1899. This is a perennial alpine species with several annual stems, caespitose to mat-forming with white flowers. It is most unlikely that this plant was growing as a weed and probably came from a garden.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 


    Annual or biennial herbs 10-30 cm high, erect, glabrous. Basal leaves oblanceolate to obovate, petiolate, not in a rosette and dying off early. Stem leaves oblong, obovate-oblong to lanceolate, the lower ones shortly petiolate, the upper ones sessile, sagittate-amplexicaul, entire or repand-serrate. Racemes many-flowered, dense in flower, lax in fruit. Flowers small, white, the petals 2.5-3.5 mm long. Siliculae on ascending, 0.5-1.5 cm long pedicels, 1-1.5 x 0.8-1.3 cm, obovate-circular, broadly winged all round but wings broadest apically, emarginate, the sinus narrow and deep; stigma sub-sessile in the sinus. Seeds 5-8 per locule, 1.5-2 mm long.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 


    A native of the Mediterranean area now widespread in Europe, Asia, North Africa and North America. Only once recorded from South Africa.

  • Provided by: [D].e-Flora of South Africa
    • Source: [
    • 6
    • ]. 


    SELECTED REFERENCE Best, K. F. and G. K. McIntyre. 1975. The biology of Canadian weeds. 9. Thlaspi arvense L. Canad. J. Pl. Sci. 55: 279-292.

  • Provided by: [F].Flora of North America @
    • Source: [
    • 3
    • ]. 

    Distribution Map

    • Introduced distribution
    Introduced into
    • Southern America Brazil São Paulo

    Other Local Names

    Fanweed, field pennycress, stinkweed

     Information From

    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    MBG Floras Images
    Flora images. Missouri Botanical Garden. Accessed on Jun. 2018.
    • B Missouri Botanical Garden
    • C Missouri Botanical Garden
    e-Flora of South Africa
    e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute.
    • D All Rights Reserved
    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
    • E Group Brazil Flora, REFLORA Program
    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.
    • F Flora of North America Association
    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • G Missouri Botanical Garden
    Flora Mesoamericana
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • H Missouri Botanical Garden
    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.
    • I Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    World Flora Online consortium
    World Flora Online Data. 2018.
    • J CC0 1.0 Universal (CC0 1.0).