Onopordum acanthium L.
Scotch cottonthistle
2021 Diana Wing
2019 Catherine Talbot
2018 Joe Woods
2001 CDFA
2017 Elysa DuCharme
2014 Joel Trumbo
2019 Catherine Talbot
2007 Louis-M. Landry
2007 Louis-M. Landry
Onopordum acanthium is a
perennial herb that is
not native to California.
Cal-IPC rating: high
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
one or more occurrences within a 7.5-minute quadrangle
Bloom Period
Information about
Onopordum acanthium
from other sources
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2021 Diana Wing:!2019 Catherine Talbot:!2018 Joe Woods:!2001 CDFA:!2017 Elysa DuCharme:!2014 Joel Trumbo:!2019 Catherine Talbot:!2007 Louis-M. Landry:!2007 Louis-M. Landry:!
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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]. 2023. Berkeley, California:
The Calflora Database
[a non-profit organization].
Available:
https://www.calflora.org/
(Accessed: 01/31/2023).