Lactuca schulzeana Büttner
  • in Verh. Bot. Ver. Brand. xxxi. (1889) 72.


Cite taxon page as 'WFO (2020): Lactuca schulzeana Büttner. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-0000006669. Accessed on: 28 Oct 2020'

Morphology

Yellow or white florets in rather small heads in a wide diffuse panicle.

  • Provided by: [B].Plants Of the World Online Portal - FWTA
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    An erect herb up to about 6 ft. high

  • Provided by: [B].Plants Of the World Online Portal - FWTA
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    Achenes dark-brown, c. 4.5 mm. long including a distinct 1 mm. long beak, c. 1.25 mm. wide, fusiform, 3–4-angled, 1-several-ribbed between the angles, minutely hispidulous; beak slender, discolorous; pappus several-seriate of white barbellate setae c. 5 mm. long.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Corollas 10–12.5 mm. long, blue to purplish; tube c. 5 mm. long, narrowly cylindric, sparsely setulose about the outside of the throat; ligule c. 6.5 mm. long, oblanceolate-lorate, lobes c. 1 mm. long, apically papillose.

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    Florets c. 10 per capitulum.

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    Phyllaries 4–5-seriate, purplish, glabrous, ciliolate above; the outermost c. 1.5 mm. long, ovate; the innermost up to c. 12 mm. long, lorate-lanceolate, obtuse to acute.

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    Capitula numerous stalked; involucres 6–8 mm. long at time of flowering, increasing to c. 12 mm. in fruiting capitula, cylindric to very narrowly campanulate.

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    Synflorescence elongate-paniculate; branches short, patent and much thinner than the stem axis, sparsely glandular setulose, bracteate; bracts foliaceous.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Leaves cauline somewhat crowded below; the lowermost up to c. 32 x 12 cm., elliptic-lanceolate in outline, grossly lyrate-runcinate, apices acute to obtuse, bases cuneate-attenuate with midrib ± narrowly winged petiole-like and semi-amplexicaul, denticulate on the margins, glabrous or sparsely setose particularly on the midrib and main nerves beneath; the upper leaves decreasing in size towards the stem apex, becoming lanceolate, undivided and sessile, ± sparsely setose.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    An erect long-lived giant annual herb, up to 3(3.5) m. tall.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Taproot with several thick ± fleshy lateral roots.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Stem solitary simple up to c. 1.5 cm. in diam., striately ribbed hollow glaucous, sparsely setose below, glabrous above.

  • Provided by: [C].Plants Of the World Online Portal - FZ
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    Does not occur in our area, contrary to distribution data in F.W.T.A

  • Provided by: [D].Plants Of the World Online Portal - FTEA
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      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).
    Plants Of the World Online Portal - FWTA
    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
    • B The Trustees of the Royal Botanic Gardens, Kew
    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
    Plants Of the World Online Portal - FTEA
    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
    • D
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • E CC0 1.0 Universal (CC0 1.0).