1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Launaea Cass.
      1. Launaea cornuta (Hochst. ex Oliv. & Hiern) C.Jeffrey

        This species is accepted, and its native range is Nigeria to Eritrea and S. Tropical Africa.

    [FZ]

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

    Habit
    An erect glabrous long-lived annual herb, or perennial herb from a semi-woody rootstock.
    Stem
    Stem usually solitary up to 1.7 m. tall, hollow leafy and branched above, or sometimes divaricately branched from near the base; branches up to c. 50 cm. long.
    Leaves
    Leaves sessile, mostly 5–10x1 cm., up to 25 x 3 cm. in well-grown plants, linear to narrowly elliptic, entire or with 1–3 pairs of lobes near the base, leaf and lobe apices acute, margins entire to acicular-denticulate, midrib prominent beneath; lobes 0.3–5.5 x 0.1–1 cm.
    Capitulum
    Capitula numerous, in a lax ± diffusely branched panicle; capitula stalks up to c. 2.5 cm. long, with 0 to many reddish-tinged bracteoles.
    Involucre
    Involucres 7–10 x 3–4 mm., not markedly accrescent, ovoid-cylindric, later spreading, glabrous, rarely shortly white puberulous outside; phyllaries 2–3-seriate, 2–4 mm. long and narrowly ovate on the outside, up to 7–10 mm. long and narrowly lanceolate on the inside, green and often reddish outside, sometimes subapically corniculate, midribs becoming swollen and corky below.
    Florets
    Florets 10–25 per capitulum; corollas yellow, up to c. 11 mm. long, ligule often becoming reddish outside, 7–8 mm. long, lorate.
    Fruits
    Achenes buff or pale-brown, 2.5–4 mm. long, subfusiform to narrowly obovoid, uniformly narrowly 6–14-ribbed, ribs muricate; pappus of white barbellate setae 4.5–5.5 mm. long, not exceeding the involucre.
    [FTEA]

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

    Habit
    Annual or perennial herb, erect, 0.2–1.5 m high; rootstock often thick, fleshy and long; stem hollow, much-branched, often slightly succulent, glabrous, with milky juice.
    Leaves
    Leaves often glaucous, sessile, lanceolate to linear and sometimes pinnatilobed, 2–25 cm long, 0.3–4 cm wide (or up to 9 cm wide including the lobes), base attenuate to short-sagittate, margins entire to dentate, lobes (when present) in the proximal part of the leaf, narrowly triangular and 0.5–5 cm long, leaf and lobe apices acute, glabrous.
    Capitulum
    Capitula many, in lax panicles; stalks of individual capitula 2–25 mm long, sometimes pilose; involucre 7–10 mm long, cylindric to spreading; phyllaries green, often with purplish streak or apex, extending down the stalk, ovate to lanceolate, 2–10 mm long, acute or obtuse, often scattered-pilose, usually with a single glandular seta near the apex.
    Florets
    Florets 10–25 per capitulum; corolla yellow or pale lemon yellow (rarely described as whitish), the outer ones with ligule with thin or broad purple or red streak(s), tube 3–4 mm long, ligule 6–8 mm long, 1.5–2.2 mm wide.
    Fruits
    Achenes pale brown, fusiform or narrowly obovoid, 2.5–4 mm long, many-ribbed with muricate ribs; pappus of white setae 4.5–6 mm long.
    Habitat
    Grasslands, and an important weed of cultivation and ruderal sites; 1–1800(–2300) m
    Distribution
    K1 K3 K4 K5 K6 K7 P T1 T2 T3 T4 T5 T6 T7
    [FWTA]

    Compositae, C. D. Adams. Flora of West Tropical Africa 2. 1963

    Habit
    An erect perennial herb with glaucous stems up to about 4 ft. high
    Corolla
    Ligules of florets pale yellow, reddish outside.

    Images

    Distribution

    Native to:

    Burundi, Cameroon, Central African Repu, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Malawi, Mozambique, Nigeria, Rwanda, Somalia, Sudan, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Launaea cornuta (Hochst. ex Oliv. & Hiern) C.Jeffrey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2011 s. col. [T 1820 / B1652], Kenya K000662614
    Jan 1, 2009 Laizer, G.S. [1469], Tanzania K000614903
    Jan 1, 2009 Kindeketa, W.J. [2780], Tanzania K000614956
    Ash [1764], Ethiopia 35615.000
    Schweinfurth, G. [2245] K000251725 syntype
    Schweinfurth, G. [1290] K000251728
    Schweinfurth, G. [1452] K000251729
    Kotschy [157] K000251723 lectotype
    Kotschy [157] K000251724 syntype
    Chevalier, Aug. [6571], Chad K000251726 isotype
    Meller, C. J. K000251750 syntype
    Speke and Grant, Captains K000251746 syntype
    Laizer, G.S. [1388], Tanzania K000614908
    Collenette, L.C. [269], Somalia Prenanthes somaliensis 29622.000

    First published in Kew Bull. 18(3): 468 (1966)

    Accepted by

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

    Literature

    Flora of Tropical East Africa
    • N. Kilian in Englera 17: 175 (1997).
    • Agnew, A.D.Q. & Agnew, S., Upland Kenya Wild Flowers, ed. 2: 229 (1994).
    • G.V. Pope in Flora Zambesiaca 6: 219, t. 40e (1992).
    • Blundell, Wild Flow. E. Afr.: pl. 373 (1987).
    • C. Jeffrey in Kew Bulletin 18: 468 (1966).

    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

    Flora of West Tropical Africa
    Flora of West Tropical 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