Calflora Taxon Report
Conyza bonariensis  (L.) Cronquist

(not an active name)
Asthmaweed,   Flax leaved fleabane,   Horseweed,   South american horseweed
Conyza bonariensis is an annual herb that is not native to California.
also called Erigeron bonariensis
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Conyza
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Name Status:
Accepted by PLANTS
Alternate Names:
PLANTSErigeron bonariensis
PLANTSErigeron crispus
PLANTSErigeron linifolius
PLANTSLeptilon bonariense
PLANTSLeptilon linifolium
More …
Information about Conyza bonariensis from other sources

USDA PLANTS Profile (COBO)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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