1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Geigeria Griess.
      1. Geigeria alata (Hochst. & Steud.) Benth. & Hook.f. ex Oliv. & Hiern

        This species is accepted, and its native range is Mauritania to Eritrea and Namibia, Arabian Peninsula.

    [FTEA]

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

    Habit
    Annual herb, usually up to 10 cm high but in temporarily swampy sites to 30 cm high; stems usually much branched, minutely scabridulous, with continuous wings up to 3 mm wide.
    Leaves
    Leaves subopposite, sessile, lanceolate, 2–5(–8) cm long, 0.4–1.5(–2.5) cm wide, base cuneate and decurrent, margins obscurely denticulate, apex acute with a spiny point, scabridulous and glandular on both surfaces.
    Capitulum
    Capitula 7–10 mm long, solitary in leaf axils and branching points, sessile; phyllaries of two kinds, the outermost distally green and foliose, to 14 mm long and 4 mm wide, at anthesis spreading, the inner ones cream, ovate, 2–8 mm long, tapering to a spiny and outcurving tip, ciliate, glandular; receptacle with membranaceous paleae to 4 mm long, 3-lobed.
    Florets
    Florets 10–12; outer florets with tube cylindric, 2–3.5 mm long, ray 2.5 mm long, 0.6–0.8 mm wide and glandular beneath, style 2.5–3.8 mm long; inner florets with tube cylindric and rather squat, 1–2.6 mm long, lobes 1.2–1.5 mm long and pilose and glandular, anthers 1.4–1.5 mm long, style 2.2–4 mm long.
    Fruits
    Achenes ellipsoid, 0.8–1.1 mm long, densely hairy; pappus of membranaceous scales, those of the inner series awned and to 2 mm long.
    Habitat
    Stony, semi-desert grassland; 1050–1350 m
    Distribution
    K1 Mauretania, Algeria to Sudan, Ethiopia, Somalia, Angola, NamibiaSaudi Arabia, Yemen
    [FWTA]

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

    Habit
    A herb up to about 1 ft. high with a 3-winged stem
    Leaves
    Leaves of two sorts occur at each node, two with decurrent bases and one without
    Inflorescences
    Flower-heads about 1/6 in. long with the tips of the outer involucral bracts spreading and leafy
    Florets
    Florets yellow
    Ecology
    A weed of semi-desert.

    Images

    Distribution

    Native to:

    Angola, Chad, Djibouti, Eritrea, Ethiopia, Kenya, Mali, Mauritania, Namibia, Niger, Saudi Arabia, Somalia, Sudan, Yemen

    Geigeria alata (Hochst. & Steud.) Benth. & Hook.f. ex Oliv. & Hiern appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Sep 19, 1957 Demange [33], Mali K000391795
    Jan 1, 1952 Schimper, W. [853] K000415403 Unknown type material

    First published in Fl. Trop. Afr. 3: 368 (1877)

    Accepted by

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

    Literature

    Flora of West Tropical Africa
    • F.W. Andr. FL. Pl. Sudan 3: 31, fig. 5.
    • in F.T.A. 3: 368 (1877)
    Flora of Tropical East Africa
    • Agnew, A.D.Q. & Agnew, S., Upland Kenya Wild Flowers, ed. 2: 214 (1994).
    • Ozenda, Fl. Sahara: 586 (1977).
    • C.D. Adams in Flora of West Tropical Africa ed. 2, 2: 258 (1963).
    • F. W. Andr., The Flowering Plants of the Sudan 3: 31, fig. 5 (1956).
    • Merxm. in Mitt. Bot. Staats., München 1: 270 (1953).
    • Oliv. & Hiern in Flora of Tropical Africa 3: 368 (1877).

    Sources

    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 2019. 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 2019. 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