1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Lactuca L.
      1. Lactuca zambeziaca C.Jeffrey

        This species is accepted, and its native range is DR Congo to Angola.

    [FZ]

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

    Habit
    An erect perennial herb, often viscid, up to c. 150(200) cm. tall; taproot semi-woody turbinate.
    Stem
    Stems solitary, branching above, glabrous, green and often purple-tinged.
    Leaves
    Leaves contemporaneous with flowers, ± membranous, glabrous, 18–32 x 0.25–1.5 cm., narrowly elliptic to linear-lanceolate, usually with 2–4 well developed lobes in the lower half, ± attenuate and acute at the apex, narrowly attenuate below and usually semi-amplexicaul at the base, subentire; terminal lobe 12–23 cm. long, elliptic-linear; lateral lobes 0.5–6 cm. long, very narrowly triangular.
    Synflorescence
    Synflorescences paniculate, up to c. 40 x 15 cm., cylindrical; branches divaricate slender glabrous.
    Capitulum
    Capitula numerous, stalked; stalks 1.5–12 mm. long; involucres 8–9 x 1.5–2 mm. at time of flowering, increasing to c. 12 x 2.5 mm. in fruiting capitula, cylindric.
    Phyllaries
    Phyllaries ciliolate above otherwise glabrous, guttulate, green and often purple-tinged where exposed; the outermost less than half the length of the inner, broadly ovate; the innermost 9–11 x 1–2 mm., linear-lanceolate, margins becoming involute except near the apices.
    Florets
    Florets c. 5 per capitulum; corollas yellow, up to c. 12 mm. long, tube narrowly cylindric, sparsely pilose near the throat; ligule c. 6 mm. long, erect.
    Fruits
    Achenes dark-brown to black, 5–6.5 x 1.5–2 mm. including a 1–1.5 mm. long paler-coloured beak, compressed-ellipsoid, broadly thickened at the margins, narrowly 1-ribbed on each face, hispidulous or glabrous; pappus several-seriate, of white barbellate setae c. 6 mm. long.

    Images

    Distribution

    Native to:

    Angola, Zambia, Zaïre

    Lactuca zambeziaca C.Jeffrey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Richards, H.M. [11108], Zambia K000251892 holotype

    First published in Kew Bull. 18(3): 450 (1966)

    Accepted by

    • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0