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This genus is accepted, and its native range is Ethiopia to S. Tropical Africa, Madagascar, India to Indo-China, Jawa.
A specimen from Kew's Herbarium

[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 subshrubs
Morphology Leaves
Leaves alternate, simple, basally 3-nerved
Morphology Reproductive morphology Inflorescences
Capitula in compound white or pinkish spherical or elliptic secondary heads which are solitary or several together in a dichasial synflorescence; individual capitula not flattened laterally, each subtended by a single bract, with two marginal opposite lateral phyllaries each sometimes subtending a female floret, and up to 45 bisexual disk florets subtended by paleae
Morphology Reproductive morphology Inflorescences Bracts
Subtending bracts acute to acuminate, with hyaline margin
Morphology Reproductive morphology Inflorescences Bracts Phyllaries
Phyllaries narrowly elliptic to obovate, obtuse, with hyaline margin
Morphology Reproductive morphology Inflorescences Bracts Palea
Paleae conduplicate, obtuse to truncate, apically obscurely 3-lobed
Morphology Reproductive morphology Flowers Corolla
Corolla of female florets cylindrical, sometimes widened at apex; corolla of bisexual florets (4–)5-lobed, white to pale pink, commonly with green tube; anthers shortly tailed at base
Morphology Reproductive morphology Fruits
Achenes black, somewhat flattened dorsiventrally, elliptic or obovate to obcordate in outline with attenuate base and a short apical neck, glabrous or with ± clearly anchor-shaped twin hairs along lateral margins or scattered over surfaces; pappus absent or a ring of connected twin hairs
Morphology Reproductive morphology Flowers Receptacle
Receptacle narrowly conical.
Distribution
Genus of 12 species, eight in Africa, three in Madagascar, and one in Asia.
Note
The Ethiopian A. boranense Cuf. intergrades with A. gracile (Oliv.) Mattf. (Kenya and Tanzania) in a large area of northeastern Kenya, and intermediate specimens have been collected very close to the Somali border. Such specimens differ from A. lobatum, the only species known with certainty from Somalia, by having more or less serrate but not lobed or incised leaves without a distinct petiole.

[FTEA]

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

Morphology General Habit
Perennial herbs or subshrubs
Morphology Leaves
Leaves alternate, simple or dissected
Morphology Reproductive morphology Inflorescences Synflorescence
Capitula in dense heads of heads, the glomerules, disciform or discoid, the glomerules arranged in synflorescences or solitary; phyllaries 0–2 per capitulum; receptacle paleate
Morphology Reproductive morphology Inflorescences Capitulum
Capitula with 2 filiform female florets and few to many hermaphrodite disc florets
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers caudate
Morphology Reproductive morphology Fruits
Achenes slightly flattened; pappus absent or occasionally a ring of connected twin-hairs.

Native to:

Assam, Cambodia, Ethiopia, India, Jawa, Kenya, Laos, Madagascar, Myanmar, Rwanda, Somalia, Tanzania, Thailand, Uganda, Vietnam, Zambia, Zimbabwe

Athroisma DC. appears in other Kew resources:

First published in Arch. Bot. (Paris) 2: 516 (1833)

Accepted by

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

Literature

Flora of Somalia

  • Eriksson in Bot. J. Linn. Soc. 119: 101–184 (1995).
  • Flora Somalia, (2000) Author: by T. Eriksson [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • T. Eriksson in Bot. J. Linn. Soc. 119: 101–184 (1995)
  • in Arch. Bot. 2: 516 (1833)

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