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

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

    [FTEA]

    Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

    Habit
    Perennial herb, the stem 40–80 cm high, bearing both leaves and capitula, glabrous, green with a few purple streaks; root tuberous, like a carrot.
    Leaves
    Basal leaves unknown, cauline leaves 2–4, sometimes absent, sessile, lanceolate, (3–)5–10 cm long, (0.5–)1–2.2 cm wide, half-amplexicaul, margins sinuate-denticulate, apex acute or acuminate, glabrous; midrib sometimes purple.
    Capitulum
    Capitula ± 20, in lax panicles; involucre cylindric, 11–15 mm long; phyllaries green with purple marks, ovate to lanceolate, 2–12 mm long, glabrous but for the very apex.
    Flowers
    Corolla white, the ligules tinged mauve beneath, tube cylindrical, ± 3 mm long, ligule 10–11 mm long, 3 mm wide.
    Fruits
    Achenes flattened, ellipsoid, 3-ribbed on each side, 6.5–7 mm long, hardly beaked, minutely puberulous; pappus white, 7–9.5 mm long.
    Habitat
    Secondary Brachystegia woodland; 950–1050 m
    Distribution
    T8

    Images

    Distribution

    Native to:

    Tanzania, Zaïre

    Lactuca songeensis C.Jeffrey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Milne-Redhead [7965A], Tanzania K000251881 holotype

    First published in Kew Bull. 18(3): 448 (1966)

    Accepted by

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

    Literature

    Flora of Tropical East Africa
    • Dethier in Bulletin du Jardin Botanique National de Belgique 52: 376 (1982).
    • C. Jeffrey in Kew Bulletin 18: 448, fig. 7 (1966).

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    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