Taxon  Report   2324 
Conyza bonariensis  (L.) Cronq.  (not an active name; please see Erigeron bonariensis)
Asthmaweed,  Flax leaved fleabane, Horseweed, South american horseweed
Conyza bonariensis
© 2007 Luigi Rignanese
Click on a photo to see it bigger.
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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Plant Characteristics
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Conyza bonariensis
© 2009 Neal Kramer
Genus: Conyza
Distribution by County 

Add an Observation of  Conyza bonariensis

Name Status:
Accepted by PLANTS + JM93
TJM2 accepted name: Erigeron bonariensis
Alternate Names:
(according to)

PLANTS: Erigeron bonariensis
PLANTS: Erigeron crispus
PLANTS: Erigeron linifolius
PLANTS: Leptilon bonariense
PLANTS: Leptilon linifolium
NOTE: Conyza bonariensis is not an active name in the Calflora species table.
More information about  Conyza bonariensis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Feb 22, 2018).

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