1. Family: Asteraceae Bercht. & J.Presl
    1. Dicoma Cass.

      1. This genus is accepted, and is native to Asia-Tropical, Africa and Asia-Temperate..

    [FZ]

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

    Habit
    Annual herbs, or suffrutices with annual stems from woody taproots or from woody rootstocks with thong-like roots, or sometimes from semi-woody tuberous rootstocks.
    Stem
    Stems 1-several, erect or decumbent, sometimes caespitose, simple or branching, sericeous-araneose to lanate or glabrescent, occasionally abbreviated or absent.
    Leaves
    Leaves alternate, occasionally subrosulate, sessile and ± stem-clasping occasionally stem-sheathing at the base, usually discolorous, entire or serrulate on the margins or revolute, indumentum as for stems and usually more dense on the leaf lower surface, 3–5-veined from the base or obscurely so.
    Capitulum
    Capitula homogamous and discoid, all florets hermaphrodite, or capitula heterogamous and disciform (in the Flora Zambesiaca area) with the outer florets neuter, 1 -numerous, sessile or shortly stalked, solitary and terminal or spiciform to subpaniculate.
    Phyllaries
    Phyllaries many-seriate, imbricate, appressed or spreading, the outer sometimes squarrose or reflexed, sometimes extending onto the capitulum stalk, the innermost sometimes shorter than the rest, chartaceous to stiffly coriaceous, pungent or subulate.
    Receptacle
    Receptacular paleae absent.
    Florets
    Disk-floret corollas yellowish to creamy-brown or purplish to whitish, hermaphrodite and regularly deeply 5-lobed, the lobes ± equalling the tube in length, corollas glabrous. Ray-florets usually absent, or when present neuter with filiform sub-bilabiate corollas, and a pappus of several-seriate barbellate setae.
    Anthers
    Anther apical appendage lorate-lanceolate, thecae bases sagittate produced into long retrorse-ciliate tails.
    Style
    Style shortly bifid, the branches not separating, tips obtuse with minute sweeping hairs.
    Fruits
    Achenes ± compressed turbinate, obscurely 2–5-ribbed or strongly 10-ribbed, usually glandular or glutinous, densely long-ascending hispid; disk-floret pappus copious, 2-several-seriate of slender plumose or barbellate setae, the setae all similar increasing in length to the inside, or somewhat dimorphic with the outer setae slender and the inner stouter narrowly scale-like and often ± scarious-winged in the lower part.
    [FTEA]

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

    Habit
    Perennial or sometimes annual herbs or shrubs, sometimes with woody tuberous rootstock, sometimes acaulescent
    Leaves
    Leaves alternate, sessile, serrulate
    Capitulum
    Capitula homogamous, usually discoid, sometimes heterogamous and disciform, solitary and terminal on the inflorescence branches or in terminal corymbiform or racemiform cymes, sometimes precocious in acaulescent species; phyllaries 4–multiseriate, imbricate, at least the outer acutely acuminate-attenuate and spinescent; receptacle moderately to deeply alveolate, honeycombed, the margins of the alveoli toothed, at least at the angles
    Florets
    Florets hermaphrodite; corolla tubular in lower half, narrowly campanulate above and deeply divided into 5 narrow equal lobes; anthers with barbellate tails; style branches short, finely hairy
    Fruits
    Achenes villous or setose; pappus of several series of barbellate or plumose bristles or scales.

    Images

    Distribution

    Native to:

    Angola, Benin, Botswana, Burkina, Burundi, Cameroon, Cape Provinces, Central African Repu, Chad, Djibouti, Eritrea, Ethiopia, Free State, Ghana, Guinea, Gulf States, India, Kenya, KwaZulu-Natal, Lesotho, Madagascar, Malawi, Mali, Mauritania, Mozambique, Myanmar, Namibia, Niger, Nigeria, Northern Provinces, Oman, Pakistan, Palestine, Rwanda, Saudi Arabia, Senegal, Sinai, Socotra, Somalia, Sudan, Swaziland, Tanzania, Togo, Uganda, West Himalaya, Yemen, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Algeria, Libya

    Dicoma Cass. appears in other Kew resources:

    First published in Bull. Sci. Soc. Philom. Paris(1817) 12.

    Accepted by

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

    Literature

    Flora of West Tropical Africa
    • C. F. Wilson in Kew Bull. 1923: 377.
    • —F.T.A. 3: 442
    Flora Zambesiaca
    • Lawalrée & Mvukiyumwami in Bull. Jard. Bot. Nat. Belg.52: 151 (1982).
    • Hilliard, Compos. Natal: 582 (1977).
    • Wild in Kirkia 8: 178 (1972).
    • C. Jeffrey in Kew Bull.21, 2: 208 (1967).
    • F.C. Wilson in Bull. Misc. Inf., Kew1923: 377 (1923).
    • in Bull. Sci. Soc. Philom. Paris1817: 12 (1817).
    Flora of Tropical East Africa
    • K. Bremer, Asteraceae Clad. & Class.:99 (1994)
    • G.V. Pope in K.B. 46: 699 (1991)
    • F.C. Wilson in K.B. 1923: 377 (1923)
    • in Bull. Soc. Philom. Paris 1817: 12 (1817)

    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

    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

    Plants and People Africa
    Common Names from Plants and People Africa http://www.plantsandpeopleafrica.com/
    © Plants and People Africa http://www.plantsandpeopleafrica.com http://creativecommons.org/licenses/by/3.0/