1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Launaea Cass.
      1. Launaea rogersii (Humbert) Humbert & Boulos

        This species is accepted, and its native range is DR Congo to Angola, Madagascar.

    [FZ]

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

    Habit
    A scapose, glabrous somewhat glaucous perennial herb up to c. 60 cm. tall, from a semi-woody rootstock.
    Leaves
    Leaves appearing after the flowers, 2–5 radical ± prostrate, up to c. 13 x 8 cm., elliptic-obovate to rotund, apices obtuse to rounded, margins entire or acicular-denticulate, bases ± broadly cuneate, lamina thinly succulent, glabrous and ± glaucous beneath.
    Stem
    Flower stalks green or purple-tinged, usually solitary, wiry, branched above with divaricate-ascending slender branches, or flower stalks shorter and more densely branched.
    Capitulum
    Capitula numerous, subsessile or shortly stalked, singly or in groups of 2–4 along the branches.
    Involucre
    Involucres c. 7 x 1.5 mm., narrowly cylindric, accrescent, becoming c. 10 mm. long and spreading; phyllaries green to purplish, glabrous, each often subapically corniculate, eventually swollen and corky towards the base; inner phyllaries 5, subequal, 7–10 mm. long, lorate-lanceolate, 4–5 times longer than the outer.
    Florets
    Florets 3–4(6) per capitulum; corollas yellow becoming reddish-purple, up to 10.5 mm. long, ligules c. 5 mm. long, glabrous.
    Fruits
    Achenes light- or reddish-brown, c. 4.5 mm. long, narrowly subfusiform, finely ribbed, glabrous or minutely hispidulous; pappus many-seriate, composed of white barbellate setae 4–6 mm. long.

    Images

    Distribution

    Native to:

    Angola, Madagascar, Zambia, Zaïre

    Launaea rogersii (Humbert) Humbert & Boulos appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Rogers, F. A. [10038] K000251722 lectotype

    First published in Fl. Madagasc. 189: 882 (1963)

    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

    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