Draba L.
  • Sp. Pl. 2: 642. 1753. (1 May 1753)
  • [Greek drabe, acrid, for taste of mustard plant]

Cite taxon page as 'WFO (2020): Draba L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000012494. Accessed on: 31 May 2020'

General Information

Herbs perennial, rarely annual, biennial (or subshrubs with woody stems). Trichomes simple, forked, stellate, malpighiaceous, or dendritic, stalked or sessile, often more than 1 kind present. Stems erect or ascending, sometimes prostrate, leafy or leafless and plants scapose. Basal leaves petiolate, often rosulate, simple, entire or toothed, rarely lobed. Cauline leaves petiolate or sessile, cuneate or auriculate at base, entire or dentate, sometimes absent. Racemes bracteate or ebracteate, elongated or not in fruit. Fruiting pedicels slender, erect, ascending, or divaricate. Sepals ovate, oblong, or elliptic, base of lateral pair not saccate or subsaccate, margin usually membranous. Petals yellow, white, pink, purple, orange (or rarely red); blade obovate, spatulate, oblong, oblanceolate, orbicular, or linear, apex obtuse, rounded, or rarely emarginate; claw obscurely to strongly differentiated from blade. Stamens 6, tetradynamous; filaments dilated or not at base; anthers ovate or oblong, obtuse at apex. Nectar glands 1, 2, or 4, distinct or confluent and subtending bases of all stamens; median glands present or absent; lateral glands toothlike, semiannular, or annular. Ovules 4 to numerous per ovary. Fruit dehiscent, silicles or rarely siliques, ovate, elliptic, oblong, orbicular, ovoid, globose, lanceolate, or linear, latiseptate or terete, sometimes spirally twisted; valves distinctly or obscurely veined, glabrous or pubescent; replum rounded; septum complete, membranous, translucent; style distinct or obsolete, glabrous; stigma capitate, entire or slightly 2-lobed. Seeds biseriate, wingless (or rarely winged), oblong, ovate, or orbicular, flattened; seed coat minutely reticulate, not mucilaginous when wetted; cotyledons accumbent.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
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    4. Draba L.

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

    Hierbas perennes o rara vez anuales. Tricomas simples,bifurcados, estrellados, malpigiáceos o dendríticos, frecuentemente más de untipo presente. Hojas caulinares algunas veces ausentes, la base cuneada oauriculada, pecioladas o sésiles. Racimos bracteados o ebracteados, alargados ono alargados en fruto. Sépalos ovados, oblongos o elípticos, la base del parlateral no sacciforme o subsacciforme; pétalos obovados, espatulados, oblongos,oblanceolados, orbiculares o lineares, amarillos, blancos, rosados, color púrpura,anaranjados o rara vez rojos; estambres 6, tetradínamos; nectarios 1, 2 o 4,nectarios mediales presentes o ausentes; óvulos 4 a numerosos por ovario.Silículas (o rara vez silicuas) dehiscentes, ovadas, elípticas, oblongas,orbiculares, ovoides, globosas, lanceoladas o lineares, latiseptas o teretes,algunas veces torcidas en espiral, el replo redondeado; septo completo; estiloconspicuo u obsoleto; estigma capitado, entero o ligeramente bilobado; semillasbiseriadas, aplanadas, no mucilaginosas cuando se humedecen; cotiledonesacumbentes. Aprox. 390 spp. Principalmente en regiones árcticas, subárcticas,alpinas y subalpinas de Eurasia, Norteamérica (120 spp.) y los Andes (70 spp.).

    Bibliografía: Rollins, R.C. Contr. Gray Herb. 213: 1-10 (1984). Schulz, O.E. Pflanzenr.IV.105(Heft 89): 1-396 (1927).

  • Provided by: [F].Flora Mesoamericana
    • Source: [
    • 3
    • 1
    • ]. 

    Annuals, biennials, or perennials [subshrubs]; (caudex simple or branched); scapose or not; glabrous or pubescent, trichomes stalked or sessile, simple, forked, cruciform, stellate, malpighiaceous, or dendritic, often more than 1 kind present. Stems usually erect to ascending, sometimes decumbent or prostrate, unbranched or branched (usually distally). Leaves usually basal and cauline, sometimes cauline absent; petiolate or sessile; basal usually rosulate, usually petiolate, rarely sessile, blade margins usually entire or toothed, rarely pinnately lobed; cauline (when present), petiolate or sessile, blade (base cuneate [auriculate]), margins entire or dentate. Racemes (often corymbose, sometimes bracteate), elongated or not in fruit. Fruiting pedicels (proximalmost) erect or ascending to divaricate, slender. Flowers: sepals (rarely persistent), erect, ascending, or, rarely, spreading, ovate or oblong [elliptic], lateral pair not saccate or subsaccate basally; petals (erect or ascending to patent), yellow, white, pink, purple, or orange [red], obovate, spatulate, oblanceolate, or linear [orbicular, oblong], (longer than or, rarely, shorter than sepals), claw obscurely to well-differentiated from blade, (apex obtuse, rounded, notched, or, rarely, deeply 2-lobed); stamens slightly to strongly tetradynamous; filaments dilated or not basally, (glabrous); anthers ovate or oblong, (not apiculate); nectar glands (1, 2, or 4), distinct or confluent, subtending bases of stamens, median glands present or absent. Fruits silicles or siliques, sessile, ovate, lanceolate, elliptic, oblong, linear, suborbicular, ovoid, or subglobose, plane or spirally twisted, smooth, (not keeled, unappendaged), usually latiseptate, rarely terete; valves (papery), each with distinct or obscure midvein and lateral veins, glabrous or pubescent; replum rounded; septum complete; ovules 4-70(-88) per ovary; style obsolete or distinct; stigma capitate. Seeds biseriate, oblong, ovate, or orbicular, usually flattened (slightly flattened in D. aleutica, D. verna), usually not winged (winged in D. asterophora, D. brachycarpa, D. carnosula, D. pterosperma); seed coat (minutely reticulate), not mucilaginous when wetted; cotyledons accumbent. x = 6-12.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
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    "Sep ascending or erect, blunt; pet yellow or white, rounded, emarginate, or rarely bifid, narrowed below to a claw, or in some spp. reduced or wanting; anthers short, oval or oblong; ovary ovoid, with 2–many ovules per locule; style short or none; stigma capitate; glands various; fr a silicle, seldom 5 times as long as wide; herbs with entire to dentate lvs, the hairs simple to branched or stellate. 350, mostly cool N. Hemisphere, 65 in S. Amer."

  • Provided by: [E].New York Botanical Garden
    • Source: [
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    SELECTED REFERENCES Beilstein, M. A. and M. D. Windham. 2003. A phylogenetic analysis of western North American Draba (Brassicaceae) based on nuclear ribosomal DNA sequences from the ITS region. Syst. Bot. 28: 584-592. Ekman, E. 1929. Studies in the genus Draba. Svensk Bot. Tidskr. 23: 476-495. Ekman, E. 1930. Contribution to the Draba flora of Greenland. II. Svensk Bot. Tidskr. 24: 280-297. Ekman, E. 1931. Contribution to the Draba flora of Greenland. III. Some notes on the arctic, especially the Greenland drabas of the sections Aizopsis and Chrysodraba DC. Svensk Bot. Tidskr. 25: 465-494. Ekman, E. 1932. Contribution to the Draba flora of Greenland. IV. Svensk Bot. Tidskr. 26: 431-447. Fernald, M. L. 1934. Draba in temperate northeastern America. Rhodora 36: 241-261, 285-305, 314-344, 353-371, 392-404. Hitchcock, C. L. 1941. A Revision of the Drabas of Western North America. Seattle. [Univ. Wash. Publ. Biol. 11.] Koch, M. and I. A. Al-Shehbaz. 2002. Molecular data indicate complex intra- and intercontinental differentiation of American Draba (Brassicaceae). Ann. Missouri Bot. Gard. 89: 88-109. Mulligan, G. A. 1976. The genus Draba in Canada and Alaska: Key and summary. Canad. J. Bot. 54: 1386-1393. Payson, E. B. 1917. The perennial scapose drabas of North America. Amer. J. Bot. 4: 253-267. Schulz, O. E. 1927. Cruciferae—Draba, Erophila. In: H. G. A. Engler, ed. 1900-1953. Das Pflanzenreich…. 107 vols. Berlin. Vol. 89[IV,105], pp. 1-396.

  • Provided by: [C].Flora of North America @ efloras.org
    • Source: [
    • 4
    • ]. 

    Included Species

    Other Local Names

    [Greek drabe, acrid, for taste of mustard plant]

     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
    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.
    • C Flora of North America Association
    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
    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.
    • E Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    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
    • F Missouri Botanical Garden
    World Flora Online consortium
    World Flora Online Data. 2018.
    • G CC0 1.0 Universal (CC0 1.0).