1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Launaea Cass.
      1. Launaea rarifolia (Oliv. & Hiern) Boulos

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

    [FZ]

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

    Habit
    A scapose strict wiry perennial herb up to c. 95 cm. tall, or sometimes a contracted small caespitose pulviniform herb 3–15 cm. high, often glaucous; taproot slender terete semi-woody; rootcrowns 1-several, usually shortly brown-lanate.
    Leaves
    Leaves in basal rosettes, usually appearing after the flowers, up to c. 25 x 4 cm., exceptionally to 35 x 5.5 cm., obovate or narrowly oblanceolate to subspathulate, linear when young, obtuse to acute at the apex, attenuate below, entire to callose-tipped denticulate or sometimes coarsely dentate-lobulate on the margins, glabrous.
    Scape
    Scapes often purple-tinged below, 1-several, wiry, ± sparsely branched above, glabrous; or scapes much reduced, diffusely-branched and aggregated in dense clusters, c. 3–15 cm. tall.
    Capitulum
    Capitula few to many, erect; capitula stalks bracteate, bracts ± ovate, lanate in the axils.
    Involucre
    Involucres in flowering capitula c. 12–15 x 2 mm. and very narrowly ovoid-cylindric, up to c. 19 x 3.5 mm. in mature capitula.
    Phyllaries
    Phyllaries green, often purple-tinged, mostly 2–3(4)-seriate, glabrous, occasionally puberulous outside, the inner often ciliolate about the apex, each usually with a short subapical wing-like glandular outgrowth on the midrib; outer phyllaries mostly 1–2-seriate imbricate, several extending onto the capitulum stalk, 2–3 mm. long, ovate to lanceolate, margins broadly hyaline; inner phyllaries c. 5, markedly longer than the outer, subequal, linear-lanceolate, accrescent, eventually reflexed.
    Florets
    Florets c. 6–12 per capitulum; corollas yellow, 13–15 mm. long, tube puberulous outside near the throat, ligule drying purplish c. 6–8 mm. long, lorate, glabrous.
    Fruits
    Achenes 5–8 mm. long, narrowly subfusiform, somewhat 4–5-angular or ± compressed, finely 12–14-ribbed, glabrous or hispidulous, greyish-green; ribs often minutely barbellate, becoming narrowly spongy; pappus many-seriate of barbellate setae 7–10 mm. long.
    [FTEA]

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

    Habit
    Perennial herb, with annual flowering shoots (10–)20–90 cm high from long fleshy taproot; root-crown(s) one to several, short-hairy to lanate; flowering stems one to several, greenish brown, slightly glaucous, often tinged with red, wiry, sparsely branched distally or densely branched, glabrous.
    Leaves
    Leaves 2–6, in basal rosettes, usually appearing after flowering, green, glaucous beneath with reddish midrib and margins, (ob-)lanceolate to obovate, linear when young, 3–25(–35) cm long, 0.5–7 cm wide, base cuneate into a winged pseudopetiole to 3 cm long, margins entire to dentate to pinnatilobed, apex obtuse or acute, glabrous.
    Capitulum
    Capitula few to many, in dense or lax corymbs or panicles; stalks of individual capitula 0.5–4 cm long; involucre narrowly cylindric, 10–16 mm long, up to 19 mm in fruit; phyllaries erect, but eventually reflexed, green, often tinged red, the outer ovate and 1–6 mm long with scarious margins, becoming swollen at base, the inner linear-lanceolate, 8–19 mm long, acute or obtuse, with narrow scarious margins.
    Florets
    Florets 6–25 per capitulum; corolla yellow, the ligule with faint pink stripe, the whole often becoming red or purple, tube narrowly cylindric, 6–10 mm long, pilose distally, ligule 3–8 mm long, 1–1.5 mm wide.
    Fruits
    Achenes red-brown, narrowly fusiform, 4–8 mm long, angular and finely ribbed, glabrous or minutely puberulous; pappus of white setae 7–10.5 mm long.
    Habitat
    Woodland (with Brachystegia and/or Uapaca ) or wooded grassland, especially where regularly burned; 250–1900 m
    Distribution
    West Africa from Sierra Leone to Congo (Kinshasa), Rwanda, Sudan, Ethiopia, Angola, Zambia, Malawi, Mozambique, Zimbabwe, South Africa and Madagascar K3 T4 T6 T7 T8 U3 U4
    [FWTA]

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

    Habit
    An erect stiff-branched herb, the flowering stems leafless, 1-21/2 ft. high from a laticiferous perennial stock
    Inflorescences
    Involucres narrow 1/2-3/4 in. long with yellow florets, reddish outside.

    Images

    Distribution

    Native to:

    Angola, Benin, Botswana, Burundi, Cameroon, Cape Provinces, Central African Repu, Congo, Ethiopia, Gabon, Ghana, Guinea, Ivory Coast, KwaZulu-Natal, Madagascar, Malawi, Mali, Mozambique, Namibia, Nigeria, Northern Provinces, Rwanda, Sierra Leone, Sudan, Swaziland, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Launaea rarifolia (Oliv. & Hiern) Boulos appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dec 1, 1990 Brunt, M.A. [64], Cameroon K000027694
    Jan 1, 1938 Scott Elliot, G.F. [2712], Madagascar K000251751 Unknown type material
    Hepper, F.N. [1863], Cameroon K000027695
    Gossweiler, J. [1163 et 1168], Angola K001307253
    Gossweiler, J. [14045], Angola K000508693
    Gossweiler, J. [1938], Angola K001307254
    Parker, G.W., Madagascar K000251752 holotype
    Welwitsch, Dr. [3662], Angola K000251748 syntype
    Gossweiler, G. [479], Angola K000251747
    Meller, C. J. K000251749 syntype
    Stupe [illegible] [1224], Nigeria K000251718

    First published in Bot. Not. 115: 59 (1962)

    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: 114 (1997).
    • G.V. Pope in Flora Zambesiaca 6: 215, t. 40a (1992).
    • Lawalrée, Dethier & Gilissen in Flore d'Afrique Centrale Compositae: Cichorioideae: 16 (1986).
    • C. Jeffrey in Kew Bulletin 18: 464 (1966).
    • Boulos in Bot. Notis. 115: 59 (1962).

    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