Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Ageratum conyzoides
hierba de chivo, tropical whiteweed, ageratum













































Annual weed that stands 1-10 dm tall with greenish branches and blue to lavender, pink, or white flowers (Wiggins and Porter 1971).
Pantropical weed of American origin (Wiggins and Porter 1971).
Domain
Eukaryota
Kingdom
Plantae
Phylum
Magnoliophyta
Class
Magnoliopsida (= Dicotyledoneae)
Order
Asterales
Family
Asteraceae
Genus
Ageratum
Species
conyzoides
Taxon category: Accepted
Syn.: Ageratum latifolium Cav., Ageratum conyzoides var. inaequipaleaceum
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: The native range of this species is Mexico (POWO, 2023).
- Andersson, N.J. (1855) Om Galápagos Öarnes Vegetation. Kongliga Svenska Vetenskaps Akademien Handl., Stockholm: 61-256.
- Andersson, N.J. (1861-1862) Ueber Die Vegetation der Galapagos-Inseln Linnaea 31: 571-631
- Cayot, L. J. (1987) Ecology of Giant Tortoise (Geochelone elephantopus)in the Galápagos Islands. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Biology in the Graduate School of Syracuse University.
- Christophersen, E. (1932) A Collection of Plants from the Galápagos Islands. Nyt Mag. Naturvidenskaberne 70: 67-95.
- Coffey, E. Froyd, C., Willis. K. (2011) When is an invasive not an invasive? Macrofossil evidence of doubtful native plant species in the Galápagos Islands Ecology, 92(4): 805-812
- Guerrero, A. Tye, A. (2009) Darwin's Finches as seed predators and dispersers. The Wilson Journal Of Ornithology 121 (4):752-764, 2009
- Hamann, O. (1984) Changes and threats to the vegetation. In: Perry, R. (ed.) Key Environments: Galapagos. Pergamon Press, Oxford, p. 115-131.
- Heleno, R. Blake, S., Jaramillo, P., Traveset, A., Vargas, P. & Nogales, M. (2011) Frugivory and seed dispersal in the Galápagos: what is the state of the art? Integrative Zoology 6: 110-128.
- Hooker, J.D. (1847) An Enumeration of the Plants of the Galapagos Archipelago; with descriptions of those which are new. Transactions of the Linnean Society of London 20: 163-233.
- Itow, S. (1997) List of Plant Specimens collected in the Galápagos Islands, Ecuador. Bulletin of the Faculty of Liberal Arts, Nagasaki University, Natural Science, 38 (1): 53-144.
- Jäger, H. Tye, A., Kowarik, I. (2007) Tree invasion in naturally treeless environments: Impacts of quinine (Cinchona pubescens) trees on native vegetation in Galápagos Institute of Ecology, Department of Ecosystem Sciences and Plant Ecology, Technical University Berlin, Rothenburgstr. 12, 12165 Berlin, Germany.
- Jaramillo, P. (1998) Distribución Espacial de la Vegetación Vascular y Dispersión de Especies Introducidas dentro del Parque Nacional Galápagos. Tesis de Doctorado en Biología, Universidad Central del Ecuador. Especialización ECOLOGIA DE POBLACIONES.
- McMullen, C.K. (1999) Flowering plants of the Galapagos. Cornell University Press, Ithaca and London, 370 pp.
- McMullen, C.K. (1987) Biologia reproductiva de las Angiospermas de las Islas Galapágos. Pg. 39 - 52. Memorias: Taller sobre investigación Botànica y manejo en galapágos.
- Porter, D.M. (1983) Vascular Plants of the Galapagos: Origins and Dispersal. In: Bowman, R.I., Berson, M. & Leviton, A.E. (eds.): Patterns of evolution in Galápagos organisms. Pacific Division, AAAS, San Francisco, California, p. 33-96.
- Royal Botanic Gardens, Kew Missouri Botanical Garden (eds.) (2013) The Plant List, Version 1.1. Published on the Internet; http://www.theplantlist.org/ (accessed 1st January).
- Royal Botanic Gardens, Kew (2022) Plants of the world online POWO (2022): Plants of the world online. Published on the Internet; Https://powo.science.kew.org/
- Stewart, A. (1911) A botanical survey of the Galápagos Islands. Proc. Calif. Acad. Sci. 4th Series, 1: 7-288.
- Tropicos.org. (2017) Database of Missouri Botanical Garden. Tropicos.org. Missouri Botanical Garden. 06 Oct 2017 <http://www.tropicos.org
- Van der Werff, H.H. (s.a.) Pers. obs. and colls. Personal observations and collections.
- Van Leeuwen, J.F. Froyd, C.A., van der Knapp, W.O, Coffey, E.E., Tye, A. & Willis, K.J. (2008) Fossil Pollen as a Guide to Conservation in the Galapagos. Science, 2008 Nov 21, 322(5905): 1206, DOI: 101126/Science. 1163454.
- Wiggins, I.L. Porter, D.M. (1971) Flora of the Galapagos Islands Standford University Press, Stanford.
You are welcome to download and use the information found in this page, acknowledging its source.
This page should be cited as follows:
"Galapagos Species Database, Ageratum conyzoides", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=283. Accessed 31 October 2026.