Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Erigeron canadensis L.

Coniza, crisantemo, pegajosa, hierba de caballo, Horseweed, canadian horseweed, bitter weed

Photo: .
Photo: .

Taxonomy

Domain
Eukaryota

Kingdom
Plantae

Phylum
Magnoliophyta

Class
Magnoliopsida (= Dicotyledoneae)

Order
Asterales

Family
Asteraceae

Genus
Erigeron

Species
canadensis

Taxon category: Accepted

Syn.: Conyza canadensis (L.) Cronquist (POWO, 2022);

Origin: Introduced - established

Introduction

Year of first record: 1986

Mode of introduction: Accidental

Introduction Pathway: Contaminant

Subpathway: Contaminant on plants (inc. seeds and plant associated material)

Introduced status: Naturalized

Invasive status: No data

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

References

  • CONABIO (2009) Catálogo taxonómico de especies de México. Cap. nat. México 1.
  • Guézou, A. Trueman, M., Buddenhagen, E., Chamorro, S., Guerrero, A.M., Pozo, P., Atkinson, R. (2010) An extensive Alien Plan Inventory from the Inhabited Areas of Galapagos Plos One/ www.plosone.org. Volume 5/ Issue 4/e10276
  • Jørgensen, P.M. León-Yánez, S. (eds.) (1999) Catalogue of the Vascular Plants of Ecuador. Monographs in Systematic Botany from the Missouri Botanical Garden 75. Missouri Botanical Garden Press, St. Louis, 1181 pp.
  • Lawesson, J.E. (1987) Plantas exóticas en las Islas Galápagos, un resumen. Memorias. Taller sobre investigación Botánica y manejo en Galápagos. Pg. 17-23.
  • Nash, D.L. (1976) Tribe III, Astereae. In: Nash, D.L. & Williams, L.O. (eds.): Flora of Guatemala - Part XII. Fieldiana, Bot. 24(12): 128–164, 483–495.
  • Nash, D.L. (1976) Tribe V, Heliantheae. In: Nash, D.L. & Williams, L.O. (eds.): Flora of Guatemal a - Part XII. Fieldiana, Bot. 24(12): 181–361, 503–570.
  • Nowak, J.B. Lawesson, J., Adsersen, H., de Vries, T. (1987) Dos años de estudio de la dinámica de la vegetación posterior al incendio en el sur de Isabela, Islas Galápagos, Ecuador. Memorias. Taller sobre Investigación Botánica y Manejo en Galápagos. Pg. 139-153.
  • 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/
  • Tropicos.org. (2017) Database of Missouri Botanical Garden. Tropicos.org. Missouri Botanical Garden. 06 Oct 2017 <http://www.tropicos.org

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, Erigeron canadensis", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=20364. Accessed 26 June 2026.