1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Gymnanthemum Cass.
      1. Gymnanthemum thomsonianum (Oliv. & Hiern ex Oliv.) H.Rob.

        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
    Shrub or woody herb 1-4 m tall; in regularly burned areas with annual shoots from a thickened perennating root to 3 cm in diameter; stems pale or reddish brown, glandular, minutely ascending-pubescent with T-shaped hairs.
    Leaves
    Leaves petiolate or sessile, ovate or elliptic, 3-15 cm long, 1.8-7 cm wide, base rounded to cuneate and decurrent on to petiole or petioloid base, margins sinuate-serrate, apex shortly and obtusely acuminate, apiculate, thinly pubescent above and more strongly so beneath, ± glabrescent; petiole up to 1.8 cm long.
    Capitulum
    Capitula usually numerous in copious compound corymbiform cymes; stalks of individual capitula 1-8 mm, densely tomentose; involucre obconical, somewhat spreading, 3-5 mm long; phyllaries 4-8-seriate, elliptic to (broadly) ovate, obtuse, minutely apiculate, finely pubescent, 1.5-4.3 mm long, with glandular apex, becoming caducous, the innermost falling first.
    Florets
    Florets 4-9 per capitulum; corolla mauve, pale lilac or rarely white, 4-7 mm long, lobes 1.3-2 mm long, glabrous.
    Fruits
    Achenes 1.5-2.1 mm long, minutely glandular, glabrous or almost so, 4-7-ribbed, carpopodium large; outer pappus of narrow scales 0.5-0.8 mm long, inner pappus whitish, 3.2-5 mm long.
    Habitat
    Grassland; also in secondary vegetation; 750-1800 m
    Distribution
    T1 T4 U1 U2 U4 from Guinea to Congo (Kinshasa), Rwanda, Burundi, Sudan, Angola, Zambia, Malawi, Mozambique, Zimbabwe
    [FZ]

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

    Habit
    An erect slender, sparingly-branched shrub up to c. 3(5) m. tall.
    Stem
    Stems 1-several, pale or reddish-brown, up to c. 5 cm. in diam., upper stem and branches finely ribbed, granular-glandular and densely appressed-puberulous or tomentellous; indumentum of brownish small T-shaped hairs.
    Leaves
    Leaves petiolate; petiole up to c. 18 mm. long; lamina mostly to c. 10 x 5 cm., but up to c. 17 x 10 cm. in lower leaves, lanceolate to ovate, apex acute, base narrowly to shortly cuneate and somewhat decurrent on the petiole, margin subentire to serrate, upper surface ± sparsely hispid-pubescent or glabrescent, lower surface pubescent to tomentose; hairs patent, T-shaped; venation reticulate and ± prominent beneath.
    Capitulum
    Capitula small, numerous in ± contracted globose-paniculate clusters c. 5 cm. across; clusters few to very many, terminal on leafy branches; capitula stalks 1–8 mm. long.
    Involucre
    Involucres up to c. 5 mm. long, narrowly campanulate-obconic.
    Phyllaries
    Phyllaries few-seriate, somewhat loosely arranged soon spreading, becoming caducous with the inner ones being shed first, scarious, thinly puberulous where exposed otherwise glabrous, ± densely glandular at the apex, the margins ± membranous and finely-ciliate, the midrib becoming ± prominent and dark-green or purple towards the apex and usually continued into a stiff point; the outer phyllaries from c. 1 mm. long, ovate-lanceolate; the inner phyllaries up to c. 4 mm. long and ± narrowly lanceolate or elliptic, apices obtuse to rounded and mucronulate.
    Florets
    Florets 4–9 per capitulum, honey-scented; corollas white or mauve, 6–7 mm. long, gradually widening from the base.
    Fruits
    Achenes c. 2 mm. long, narrowly obovoid-turbinate, tapering to the base, faintly 4–6-ribbed or somewhat angular, minutely glandular, glabrous; outer pappus of small, caducous, linear, scale-like setae, inner pappus of white barbellate setae 4–5 mm. long.
    [FWTA]

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

    Habit
    A shrub up to about 10 ft. high
    Inflorescences
    Numerous flower-heads 1/4 in. long densely packed in rounded terminal clusters
    Florets
    Florets mauve
    Ecology
    In upland savanna.

    Images

    Distribution

    Native to:

    Angola, Burundi, Cameroon, Ethiopia, Gabon, Guinea, Kenya, Malawi, Mozambique, Rwanda, Sudan, Tanzania, Uganda, Zambia, Zaïre, Zimbabwe

    Gymnanthemum thomsonianum (Oliv. & Hiern ex Oliv.) H.Rob. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Feb 1, 2008 Mwangulango, N.A. [414], Tanzania Vernonia thomsoniana K000438250
    Dec 1, 1987 Meller, C.J. [s.n.], Malawi Vernonia thomsoniana K000273061 Unknown type material
    Schweinfurth [2805], Sudan Vernonia thomsoniana K000272948
    Meller, C.J. [s.n.], Malawi Vernonia thomsoniana K000273062 Unknown type material
    Speke, J.H. [s.n.], Uganda Vernonia thomsoniana K000272975 holotype
    Rwaburindore, P.K. [5223], Uganda Vernonia thomsoniana K000612942

    First published in Proc. Biol. Soc. Washington 112(1): 243 (1999)

    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

    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