Taxon  Report   11666 
Erigeron bonariensis  L.
Flax-leaved horseweed
Erigeron bonariensis
© 2008 Jorg Fleige
More photos from
CalPhotos / Calflora
Erigeron bonariensis
© 2009 Neal Kramer
Erigeron bonariensis, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Erigeron bonariensis
© 2009 Neal Kramer
Genus: Erigeron
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Distribution by County 

Add an Observation of  Erigeron bonariensis

Name Status:
Accepted by JEF
PLANTS accepted name: Conyza bonariensis
Alternate Names:
(according to)

ICPN: Conyza bonariensis
More information about  Erigeron bonariensis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria


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: Aug 18, 2018).

The information on this page comes from diverse sources. None of the links are sponsored.