Lactuca indica L.
  • Mant. Pl. 2
  • Alface-do-mato


Cite taxon page as 'WFO (2021): Lactuca indica L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000039155. Accessed on: 23 Oct 2021'

Morphology

Achenes dark-brown or black 4.5–5 x 1.5–2 mm. including a c. 1 mm. long paler-coloured beak, flattened-ellipsoid, ± winged on the margins and narrowly 1(2)-ribbed on each face, glabrous; pappus several-seriate, of white barbellate setae c. 7 mm. long.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
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    Synflorescence paniculate; branches ascending, glabrous with ovate to narrowly lanceolate bracts.

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    • 1
    • ]. 

    Florets 20–28 per capitulum; corollas yellow 13–15 mm. long, tube slender, cylindric, pubescent about the mouth; ligule c. 7–9 x 1.5–2 mm., lorate, glabrous.

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    • Source: [
    • 1
    • ]. 

    Leaves cauline sessile, not or scarcely auriculate, glabrous; lower leaves up to c. 22 x 14 cm., pinnatipartite, narrowly ovate to broadly elliptic in outline, remotely 2–5-lobed, the terminal lobe up to c. 9.5 x 2.5 cm. lanceolate, lateral lobes up to c. 5.5 x 1 cm. lorate; upper leaves smaller, undivided and lanceolate to linear-lanceolate, sometimes lobed.

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    • 1
    • ]. 

    Phyllaries 4–5-seriate, glabrous; the outermost 2–5 mm. long, ovate; the innermost to c. 14 mm. long, lorate-lanceolate.

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    • Source: [
    • 1
    • ]. 

    Capitula numerous, stalked; stalks up to c. 2.5 cm. long, imbricately bracteolate particularly when young; involucres 8–10 x 3.5–4 mm., cylindric at time of flowering, increasing to c. 14 x 7 mm. and becoming pyriform in fruiting capitula.

  • Provided by: [C].Plants Of the World Online Portal - FZ
    • Source: [
    • 1
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    Stems solitary, branching above, glabrous.

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    • Source: [
    • 1
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    A stout erect leafy annual or biennial herb up to c. 1.5(4) m. tall.

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    • Source: [
    • 1
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    Stout leafy annual herb to 4 m. Leaves up to 20 x 5 cm, often much narrower, entire, denticulate, pinnatifid, pinnatisect, or runcinate-pinnatisect, the lower attenuate into a winged petiole-like base, the upper sessile, not or scarcely auricled. Heads many in a long relatively narrow panicle. Involucre up to 14 x 6 mm. Flowers yellow. Achenes c. 4.5 mm long including 1 mm beak, oblong, rounded at both ends, strongly compressed, median rib on each face, broadly winged, transversely wrinkled, black.

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

    Habitat

    In Natal, mainly coastal, not recorded above about 1200 m, often along roadsides and as a weed of cultivation.

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

    Distribution

    Ranges from India to China and Indonesia, also found in Madagascar and the Mascarenes, Mocambique and Natal.

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

    Distribution Map

     
    • Introduced distribution
    Introduced into
    • Southern America Brazil Paraní
    • Santa Catarina
    • Rio de Janeiro
    • São Paulo

    Synonyms

    Other Local Names

    NameLanguageCountry
    Alface-do-matoPortuguese
    Almeirão-do-mato-grossoPortuguese
    Almeirão-do-matoPortuguese

      Bibliography

     Information From

    Compositae
    CC0 1.0 Universal (CC0 1.0). https://creativecommons.org/publicdomain/zero/1.0
    • 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
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • C
    Brazilian Flora 2020 project - Projeto Flora do Brasil 2020
    http://floradobrasil.jbrj.gov.br
    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
    • D Group Brazil Flora, REFLORA Program
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).