Cirsium hydrophilum (Greene) Jeps.
var. vaseyi (A. Gray) J. T. Howell
Mt. Tamalpais thistle, Vasey's thistle
2018 Eliezer Margolis
2021 Rowena Forest
2019 Chasey
2019 Claire Mallen
2021 Rowena Forest
2021 Rowena Forest
2025 Aaron Rocha
2025 Aaron Rocha
2019 Chasey
2018 Woody Elliott
2012 Ove Anderson
2012 Alan Castner
2012 Alan Castner
2021 Rowena Forest
2025 Aaron Rocha
Cirsium hydrophilum var. vaseyi is a
perennial herb that is
native to California, and endemic (limited) to California.
California Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere ).
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
Information about Cirsium hydrophilum var. vaseyi
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2018 Eliezer Margolis:!2021 Rowena Forest:!2019 Chasey:!2019 Claire Mallen:!2021 Rowena Forest:!2021 Rowena Forest:!2025 Aaron Rocha:!2025 Aaron Rocha:!2019 Chasey:!2018 Woody Elliott:!2012 Ove Anderson:!2012 Alan Castner:!2012 Alan Castner:!2021 Rowena Forest:!2025 Aaron Rocha:!
gp7922:!po192367:!mg88450:!io16088:!po192367:!po192367:!mg265877:!mg265875:!mg88450:!mg60735:!gp998:!gp845:!gp845:!po192367:!mg265877:!
one or more occurrences