Calflora: Erigeron bonariensis

Erigeron bonariensis L.

Flax-leaved horseweed

Erigeron bonariensis, a dicot, is an annual herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Elevation:	between 0 and 3281 feet
Family:	ASTERACEAE
Related:	See a list of other species in the genus Erigeron found in California.

Name Status:

Accepted by TJM2
PLANTS: accepted name:		Conyza bonariensis

Other Names:

TJM2:

Conyza bonariensis

Plant
Characteristics
+ Associated
Organisms

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Distribution by County:

See a detailed Distribution Grid of this plant in California.

A shaded county indicates that there are ocurrence records of this plant within the county.

Hover the mouse over the map to see county names. Click to view records from that county.

	There are specimen records from this county in an herbarium.
	There are documented records, vouchered or confirmed by an expert.
	There are reported records.
	There are reported records available indirectly (eg. in botanical literature).

Records by County, with approximate record counts in the form: TOTAL / CCH. Click county name to view records.

Alameda: 13 / 9 CCH Butte: 12 / 11 CCH Contra Costa: 4 / 3 CCH Colusa: 1 / 1 CCH El Dorado: 5 / 2 CCH Fresno: 3 / 3 CCH Glenn: 6 / 4 CCH Imperial: 1 / 1 CCH Inyo: 1 / 0 CCH Kings: 1 / 1 CCH Kern: 7 / 4 CCH Los Angeles: 59 / 34 CCH Mendocino: 3 / 2 CCH Merced: 3 / 3 CCH Monterey: 10 / 7 CCH Marin: 3 / 0 CCH Napa: 2 / 0 CCH Orange: 20 / 11 CCH Placer: 1 / 0 CCH Riverside: 33 / 18 CCH Sacramento: 5 / 2 CCH Santa Barbara: 49 / 37 CCH San Bernardino: 12 / 11 CCH Santa Clara: 5 / 5 CCH Santa Cruz: 3 / 1 CCH San Diego: 105 / 98 CCH San Francisco: 13 / 1 CCH Shasta: 2 / 1 CCH San Joaquin: 1 / 0 CCH San Luis Obispo: 13 / 10 CCH San Mateo: 6 / 0 CCH Solano: 2 / 0 CCH Sonoma: 2 / 0 CCH Stanislaus: 2 / 2 CCH Sutter: 3 / 1 CCH Tehama: 1 / 0 CCH Tulare: 1 / 1 CCH Ventura: 29 / 22 CCH Yolo: 4 / 3 CCH Yuba: 1 / 1 CCH

CCH: records provided by the participants of the Consortium of California Herbaria.

Information about Erigeron bonariensis from other sources:

Photos on Picasa / Flickr / Google Images
website references on Google
USDA PLANTS Profile (COBO)
Nursery availability and horticultural info (what grows with this plant?) on CNPLX
2012 Jepson Manual Treament from the Jepson Herbarium,
University of California, Berkeley
Search efloras.org (Flora of North America)
Search the Lady Bird Johnson Wildflower Center Native Plant Database