Taxon  Report   2324 
Conyza bonariensis  (L.) Cronq.   (not an active name; please see Erigeron bonariensis)
Horseweed,  South American horseweed, asthmaweed, flax leaved fleabane
Conyza bonariensis, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

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Conyza bonariensis
© 2009 Neal Kramer
Conyza bonariensis
© 2007 Luigi Rignanese
Genus: Conyza
Add an Observation of  Conyza bonariensis
Name Status:
Accepted by PLANTS + JM93
TJM2: accepted name: Erigeron bonariensis
 NOTE: Conyza bonariensis is not an active name in the Calflora species table.
 Information about  Conyza bonariensis  from other sources:

Photos on CalPhotos / Google Images

website references on Google

UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Original Publication citation. on the International Plants Names Index

Search (Flora of North America)

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2015. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Mar 26, 2015).

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