Cosmos Cav.

First published in Icon. 1: 9 (1791)
This genus is accepted
The native range of this genus is W. Central & Central U.S.A. to Trinidad and NW. Argentina.

Descriptions

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

Morphology General Habit
Annual or perennial herbs, sometimes shrubs
Morphology Leaves
Leaves opposite, pinnatisect or simple
Morphology Reproductive morphology Inflorescences Capitulum
Capitula terminal and solitary or in few-headed terminal or axillary cymes, radiate; involucre often fleshy at base, the phyllaries connate at base, 2-seriate with the outer leafy and the inner scarious; paleae present
Morphology Reproductive morphology Flowers Florets
Ray florets neuter; disc florets many, anthers with ovate or cordate apical appendage; style branches truncate, with caudate appendage
Morphology Reproductive morphology Fruits
Achenes fusiform, and typically attenuate into a beak; pappus absent or of retrorsely barbed aristae
Distribution
About 30 species from the Americas; some species cultivated.
[FTEA]

Sources

  • 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 Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0