Genus:
Lactuca L.

Lactuca serriola L.

This species is accepted, and its native range is Europe to SW. Siberia and Xinjiang, NW. Africa.

[FZ]

Compositae, G. V. Pope. Flora Zambesiaca 6:1. 1992

Morphology General Habit
An erect annual or biennial herb up to 2.5 m. tall.
Morphology Stem
Stems solitary, robust, simple below and branching above, glabrous to ± densely spinulose in the lower part, sometimes strongly so, leafy.
Morphology Leaves
Leaves ± appressed to the stem, sessile, usually up to 10 x 6 cm., exceptionally to 20 x 10 cm., broadly elliptic in outline and runcinate-pinnate, or some leaves undivided and oblong-oblanceolate; lateral lobes 2–6, narrowly to broadly oblong, recurved; apices rounded to obtuse mucronate; margins irregularly denticulate and ± sinuate-dentate; bases sagittate-auriculate, the auricle lobes up to c. 2 cm. long and narrowly pointed; lamina glabrous but midribs beneath often weakly to strongly spinulose.
Morphology Reproductive morphology Inflorescences Synflorescence
Synflorescences paniculate, divaricately branched; branches up to 23 cm. long, glabrous; capitula on slender, bracteate stalks up to c. 4 cm. long.
Morphology Reproductive morphology Inflorescences Bracts Involucre
Involucre 6–8 mm. long and cylindric at time of flowering, increasing to 13 x 3.5 mm. and becoming conical in fruiting capitula.
Morphology Reproductive morphology Inflorescences Bracts Phyllaries
Phyllaries glabrous, c. 2 mm. long outside increasing to c. 13 mm. long inside becoming narrowly lanceolate, margins becoming involute.
Morphology Reproductive morphology Flowers Florets
Florets c. 14 per capitulum; corollas yellow, c. 9 mm. long, tubes slender, ± densely pilose about the mouth; ligules erect, c. 5 mm. long, lorate.
Morphology Reproductive morphology Fruits
Achenes pale- or greyish-brown; beaks paler, equalling or exceeding the achene in length; achene 3 x 1 mm., oblanceolate, somewhat laterally compressed, broadly-ribbed on the margins and narrowly c. 5-ribbed on each face, hispidulous towards the apices; pappus several-seriate of numerous white, barbellate setae c. 4 mm. long, free on the apically expanded beak.

Native to:

Afghanistan, Albania, Algeria, Altay, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canary Is., Central European Rus, Corse, Cyprus, Czechoslovakia, Denmark, East Aegean Is., East European Russia, Egypt, Eritrea, Ethiopia, Finland, France, Germany, Greece, Hungary, Inner Mongolia, Iran, Iraq, Italy, Kazakhstan, Kirgizstan, Kriti, Krym, Lebanon-Syria, Libya, Madeira, Mongolia, Morocco, Netherlands, North Caucasus, North European Russi, Northwest European R, Norway, Pakistan, Palestine, Poland, Portugal, Romania, Sardegna, Saudi Arabia, Sicilia, Sinai, Somalia, South European Russi, Spain, Sudan, Sweden, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Tuva, Ukraine, Uzbekistan, West Himalaya, West Siberia, Xinjiang, Yemen, Yugoslavia

Introduced into:

Alabama, Alberta, Amur, Arizona, Arkansas, Assam, Bolivia, Botswana, Brazil South, British Columbia, California, Cape Provinces, Colorado, Connecticut, Delaware, District of Columbia, Dominican Republic, Florida, Free State, Georgia, Great Britain, Gulf States, Haiti, Idaho, Illinois, Indiana, Iowa, Ireland, Kansas, Kentucky, Khabarovsk, Korea, KwaZulu-Natal, Lesotho, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Namibia, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, North Carolina, North Dakota, Northern Provinces, Northern Territory, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Paraguay, Pennsylvania, Primorye, Prince Edward I., Queensland, Québec, Rhode I., Saskatchewan, Seychelles, South Australia, South Carolina, South Dakota, Taiwan, Tasmania, Tennessee, Texas, Tristan da Cunha, Uruguay, Utah, Vermont, Victoria, Vietnam, Virginia, Washington, West Virginia, Western Australia, Wisconsin, Wyoming, Zimbabwe

Lactuca serriola L. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Nov 4, 2011 Day, C.D. [948], Turkey K000341514 No
Jan 1, 1985 Dobson, A.T. [100], Afghanistan K000809324 No
Jan 1, 1967 Rawi, A. [23528], Iraq K000809321 No
Dieterle, A. [732], Afghanistan K000809323 No
Cope, T.A. [RBG 199], United Kingdom K000914421 Yes
Khatib, A. [19458], Syria K000809322 No
Wallich, N. [Cat. no. 3243], Nepal Lactuca bracteata K001118908 Yes
s.coll. [s.n.], Spain Lactuca scariola K000815030 Yes
Jordan, A. [s.n.], France Lactuca scariola K000815031 syntype Yes

First published in Cent. Pl. II: 29 (1756)

Accepted by

  • Aver'ianov, L.V. & al. (2006). Illyustrirovannyi opredelitel' rastenii Leningradskoi oblasti: 1-799. Nauka, Moskva.
  • Flora of North America Editorial Committee (2006). Flora of North America North of Mexico 19: 1-579. Oxford University Press, New York, Oxford.
  • GCC in GCC (2011). Global Compositae Checklist Global Compositae Checklist http://compositae.landcareresearch.co.nz/.
  • Ghazanfar, S.A., Edmondson, J.R. & Hind, D.J.N. (eds.) (2019). Flora of Iraq 6: 1-458. Ministry of Agriculture & Agrarian Reform, Baghdad.
  • Kharkevich, S.S. (ed.) (1992). Plantae Vasculares Orientalis Extremi Sovietici 6: 1-428. Nauka, Leningrad.
  • Kozhevnikov, A.E., Kozhevnikov, Z.V., Kwak, M. & Lee, B.Y. (2019). Illustrated flora of the Primorsky Territory, Russian Far East: 1-1124. National institute of biological resources.
  • Krasnoborov, I.M. (ed.) (2007). Flora of Siberia 13: 1-499. Scientific Publishers, Inc., Enfield, Plymouth.
  • Liogier, A.H. (1996). Flora de la Española 8: 1-588. Instituto Tecnológico de Santo Domingo.
  • Mirek, Z., Piekos-Mirkowa, H., Zajac, A. & Zajac, M (2020). Vascular plants of Poland an annotated checklist: 1-526. W. Szafer institute of botany, Polish academy of sciences, Krakow, Poland.
  • Wu, Z. & Raven, P.H. (eds.) (2011). Asteraceae Flora of China 20-21: 1-992. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
  • Zhao, Y.Z., Zhao, L.Q. & Rui, C. (eds.) (2019). Flora Intramongolica, edition 3, 5: 1-451. Typis Intramongolicae popularis, Huhhot.
  • von Raab-Straube, E. (ed.) (2011). Compositae. Euro+Med Plantbase The Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity http://ww2.bgbm.org/EuroPlusMed/query.asp.

Literature

Kew Backbone Distributions

  • (2020). https://bsbi.org/archaeophytes epublication.
  • Aver'ianov, L.V. & al. (2006). Illyustrirovannyi opredelitel' rastenii Leningradskoi oblasti: 1-799. Nauka, Moskva.
  • Forzza, R.C., Zappi, D. & Souza, V.C. (2016-continuously updated). Flora do Brasil 2020 em construção http://reflora.jbrj.gov.br/reflora/listaBrasil/ConsultaPublicaUC/ResultadoDaConsultaNovaConsulta.do.
  • Kharkevich, S.S. (ed.) (1992). Plantae Vasculares Orientalis Extremi Sovietici 6: 1-428. Nauka, Leningrad.
  • Krasnoborov, I.M. (ed.) (2007). Flora of Siberia 13: 1-499. Scientific Publishers, Inc., Enfield, Plymouth.
  • Zhao, Y.Z., Zhao, L.Q. & Rui, C. (eds.) (2019). Flora Intramongolica, edition 3, 5: 1-451. Typis Intramongolicae popularis, Huhhot.

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