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This genus is accepted, and its native range is Africa, Sinai to Arabian Peninsula, Indian Subcontinent to Myanmar.
Dicoma sp.

[FZ]

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

Morphology General 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.
Morphology Stem
Stems 1-several, erect or decumbent, sometimes caespitose, simple or branching, sericeous-araneose to lanate or glabrescent, occasionally abbreviated or absent.
Morphology 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.
Morphology Reproductive morphology Inflorescences 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.
Morphology Reproductive morphology Inflorescences Bracts 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.
Morphology Reproductive morphology Flowers Receptacle
Receptacular paleae absent.
Morphology Reproductive morphology Flowers 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.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther apical appendage lorate-lanceolate, thecae bases sagittate produced into long retrorse-ciliate tails.
Morphology Reproductive morphology Flowers Gynoecium Style
Style shortly bifid, the branches not separating, tips obtuse with minute sweeping hairs.
Morphology Reproductive morphology 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

Morphology General Habit
Perennial or sometimes annual herbs or shrubs, sometimes with woody tuberous rootstock, sometimes acaulescent
Morphology Leaves
Leaves alternate, sessile, serrulate
Morphology Reproductive morphology Inflorescences 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
Morphology Reproductive morphology Flowers 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
Morphology Reproductive morphology Fruits
Achenes villous or setose; pappus of several series of barbellate or plumose bristles or scales.

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Annual or perennial herbs or shrublets
Morphology Leaves
Leaves alternate, often with a petiole-like base, margins entire to serrulate
Morphology Reproductive morphology Inflorescences
Capitula campanulate, obconic or cylindric, discoid and homogamous (radiate and heterogamous outside Somalia), often with subtending leaves
Morphology Reproductive morphology Inflorescences Bracts Phyllaries
Phyllaries in many series, acuminate to pungent, coriaceous, sometimes with scarious margins
Morphology Reproductive morphology Inflorescences Bracts Palea
Paleae absent
Morphology Reproductive morphology Flowers Corolla
Corollas regular, deeply 5-lobed
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers with acute to acuminate apical appendages and long tapering, retrorse-pilose tails
Morphology Reproductive morphology Flowers Gynoecium Style
Style branches not separating, with obtuse apex and short acute sweeping hairs
Morphology Reproductive morphology Fruits
Achenes turbinate, with (5–)8–10 prominent ribs, covered with long ascending stiff hairs, basal hairs shorter and spreading
Morphology Reproductive morphology Seeds Pappus
Pappus of barbellate bristles in one to several series, with or without an internal series of scales.
Distribution
About 50 species in tropical and southern Africa and Madagascar, one species reaches the Arabian Peninsula and another occurs in India and Pakistan.

Native to:

Angola, Benin, Botswana, Burkina, Burundi, Cameroon, Cape Provinces, Chad, Djibouti, Eritrea, Ethiopia, Free State, 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 (1817)

Accepted by

  • Christenhusz, M.J.M., Fay, M.F. & Chase, M.W. (2017). Plants of the World. An illustrated encyclopedia of vascular plants: 1-792. Kew Publishing, The university of Chicago Press.
  • 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

  • C. Jeffrey in Kew Bull.21, 2: 208 (1967).
  • F.C. Wilson in Bull. Misc. Inf., Kew1923: 377 (1923).
  • Hilliard, Compos. Natal: 582 (1977).
  • Lawalrée & Mvukiyumwami in Bull. Jard. Bot. Nat. Belg.52: 151 (1982).
  • Wild in Kirkia 8: 178 (1972).
  • in Bull. Sci. Soc. Philom. Paris1817: 12 (1817).

Flora of Somalia

  • Flora Somalia, (2000) Author: by S. Ortiz & J. Rodríguez-Oubiña [updated by M. Thulin 2008]
  • Ortiz, Rodrígues-Oubiña & Mesfin Tadesse in Ann. Missouri Bot. Gard. 85: 440–459 (1998).

Flora of Tropical East Africa

  • F.C. Wilson in K.B. 1923: 377 (1923)
  • G.V. Pope in K.B. 46: 699 (1991)
  • K. Bremer, Asteraceae Clad. & Class.:99 (1994)
  • in Bull. Soc. Philom. Paris 1817: 12 (1817)

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Somalia
Flora of Somalia
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 2021. 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 2021. 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/