1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Lactuca L.
      1. Lactuca glandulifera Hook.f.

        This species is accepted, and its native range is Tropical Africa.

    [FTEA]

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

    Habit
    Perennial scrambling or scandent herb, 0.3–2 m high; stems to 3 m long, distally leafy, viscid with dense glands but glabrescent, reddish when young, with abundant white latex; older stems with characteristic papery decorticating bark.
    Leaves
    Leaves variously lobed, 2–12 cm long, 0.8–5.5 cm wide, the very base sagittate-semi-amplexicaul, continuing as a winged pseudopetiole widening into a pair (rarely two pairs) of retrorse triangular lobes 0.2–3 cm long, the terminal lobe triangular to ovate and 1–7 cm long, margins sinuate to dentate to almost lobed, apex acute or rounded, densely glandular-setose, especially on midrib and margins, but glabrescent.
    Capitulum
    Capitula many, in terminal leafy panicles to 30 cm long with ± dichotomous branching; involucre 8–15 mm long, cylindrical at anthesis becoming narrowly conical in fruit; phyllaries dark green tinged with red or purple, linear or elliptic, 2–15 mm long, obtuse or rounded, sparsely setose or glabrous, with a tiny distal hair-tuft.
    Florets
    Florets 4–6(–8) per capitulum; corolla pale yellow or less often white, sometimes with purple tinge, tube cylindric, 4–6 mm long, ligule 5–9 mm long, 1.5–2.5 mm wide.
    Fruits
    Achenes pale brown, ellipsoid and (slightly) compressed, 5.3–6 mm long including a 1–2 mm long beak, 3–6-ribbed on each side, glabrous or puberulous; pappus white, 5.5–8 mm long.
    Figures
    Fig. 20/11 (achene).
    Habitat
    Moist sites along streams, in forest margins, along roadsides, in grassland, bushland, giant heath and in cultivated land; 1200–3600 m
    Distribution
    K3 K4 K5 T2 T3 T4 T7 U2 U3 U4
    [FZ]

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

    Habit
    A creeping or scandent, somewhat viscid, short-lived perennial herb up to 1.5(3) m. high.
    Stem
    Stems up to 2(6) m. long, becoming leafless stramineous and often peeling-papyraceous below, ± densely leafy above with young growth tinged reddish-purple, ± densely glandular-setose or glabrescent.
    Leaves
    Leaves up to c. 10.5(12) x 5 cm., narrowly ovate-elliptic in outline, runcinate-pinnatipartite, usually 3-lobed, sometimes 5-lobed or simple, acicular-denticulate to subentire, ± densely glandular-setose especially on the midribs and reticulation beneath, midrib narrowly-winged and petiole-like towards the base becoming auriculate; terminal lobe up to c. 5(7) cm. long, ovate-sagittate, acuminate-mucronate rarely obtuse; lateral lobes up to c. 2.5 x 1.5 cm., recurved oblong-lanceolate, rounded to acute-mucronate, sessile or somewhat asymmetrically and abruptly narrowed at the base.
    Synflorescence
    Synflorescences paniculate, mostly terminal; branches dichotomous, densely glandular-setose, or glabrescent, bracteate.
    Capitulum
    Capitula numerous, somewhat aggregated when mature; stalks up to c. 4 cm. long, filiform, densely glandular setose to glabrescent, with 1-several bracteoles.
    Involucre
    Involucres up to c. 10 x 2 mm. and narrowly cylindrical at time of flowering, increasing to c. 14 x 3 mm. and becoming narrowly conical in fruiting capitula; phyllaries increasing somewhat abruptly in length towards the inside, narrowly lanceolate, obtuse-acute, glabrous or sparsely glandular setose, usually purplish outside, ± spirally twisted or with involute margins when dry.
    Florets
    Florets c. 5 per capitulum; corollas c. 12 mm. long, tube slender and minutely pilose above, ligule yellow often purplish outside, c. 6 x 1.5 mm., lorate.
    Fruits
    Achenes pale-brown, up to c. 6 mm. long including a c. 2 mm. beak, narrowly ellipsoid and somewhat compressed, with conspicuously swollen ribs on the margins and 4–6 corky wing-like ribs on each face, glabrous or hispidulous; pappus several-seriate of equal white barbellate setae, c. 6.5 mm. long.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Ethiopia, Gulf of Guinea Is., Ivory Coast, Kenya, Liberia, Malawi, Mozambique, Nigeria, Rwanda, Sierra Leone, Sudan, Tanzania, Uganda, Zaïre

    Lactuca glandulifera Hook.f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jul 1, 2001 Cheek, M. [8893], Cameroon K000108709
    Jan 1, 1987 Thomas, D.W. [3155], Cameroon K000027670
    Dec 1, 1974 Satabie, B. [186], Cameroon K000027673
    Jan 1, 1959 Morton, J.K. [878], Cameroon K000027664
    Jan 1, 1956 Brenan, J.P.M. [9534], Cameroon K000027662
    Jan 1, 1956 Brenan, J.P.M. [9534], Cameroon K000027663
    Hepper, F.N. [2014], Cameroon K000027675
    Hepper, F.N. [2195], Cameroon K000027676
    Maitland, T.D. [226], Cameroon K000027667
    Maitland, T.D. [1316], Cameroon K000027668
    Boughey, A.S. [12684A], Cameroon K000027665
    Mann, Cameroon K000251865
    Breteler, F.J. [MC 111], Cameroon K000027672
    Dummer, R. A. [3542], Uganda K000251887 holotype
    Mann G. [1917], Cameroon K000027679 syntype
    Mann G. [1917], Cameroon K000027669 syntype
    Mann G. [1240], Cameroon K000027678 syntype
    Dunlap [47], Cameroon K000027677 Unknown type material
    Mildbraed, G. W. J. [10814], Cameroon K000027666
    Coll. Nat. d'Agric. de Dschang [1808], Cameroon K000027671

    First published in J. Proc. Linn. Soc., Bot. 7: 203 (1864)

    Accepted by

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

    Literature

    Flora of Tropical East Africa
    • Agnew, A.D.Q. & Agnew, S., Upland Kenya Wild Flowers, ed. 2: 230 (1994).
    • G.V. Pope in Flora Zambesiaca 6: 208, t. 37h (1992).
    • Lawalrée, Dethier & Gilissen in Flore d'Afrique Centrale Compositae: Cichorioideae: 43 (1986).
    • Dethier in Bulletin du Jardin Botanique National de Belgique 52: 372 (1982).
    • C. Jeffrey in Kew Bulletin 18: 456 (1966).
    • C.D. Adams in Flora of West Tropical Africa ed. 2, 2: 293 (1963).
    • Stebbins in Bulletin du Jardin Botanique de l'État a Bruxelles 14: 350 (1937).
    • Oliv. & Hiern in Flora of Tropical Africa 3: 454 (1877).
    • Hook. f. in Journal of the Linnean Society of London, Botany 7: 203 (1864).

    Sources

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

    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