Asteraceae

Ageratina Spach

First published in Hist. Nat. Vég. 10: 286 (1841)
This genus is accepted
The native range of this genus is New World.

Descriptions

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

Morphology General Habit
Perennial herbs or shrubs
Morphology Leaves
Leaves opposite
Morphology Reproductive morphology Inflorescences
Inflorescence corymbose; involucres campanulate; phyllaries in 2–3 series, sub-equal, often costate; receptacle slightly convex, epaleate
Morphology Reproductive morphology Flowers Corolla
Corollas with slender tube and campanulate limb
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Apical anther appendages large, ovate-oblong.
Morphology Reproductive morphology Flowers Gynoecium Style
Style base enlarged, arms linear, papillate
Morphology Reproductive morphology Fruits
Achenes black, prismatic or fusiform, 5-ribbed; carpopodium large, symmetrical; pappus of usually deciduous barbellate bristles.
[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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 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 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0