Suisun Thistle (Cirsium hydrophilum var. hydrophilum)

Global Rank: T1 - Critically Imperiled
Legal Status: Federally Endangered
Family: Asteraceae
State: CA
Nature Serve ID: 161085
Lifeform: Forb/herb
Date Inducted in National Collection:

Description:

Where is Suisun Thistle (Cirsium hydrophilum var. hydrophilum) located in the wild?

Habitat:

salt water or brackish tidal marshes fringing San Pablo and Suisun Bays in the San Francisco Bay area of northern California

Distribution:

States & Provinces:

Suisun Thistle can be found in California

Which CPC Partners conserve Suisun Thistle (Cirsium hydrophilum var. hydrophilum)?

California Botanic Garden

Not Sponsored

Conservation Actions

Assigned 06/09/17

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

09/01/2020

Based on an September 2020 extract of the California Plant Rescue Database, California Botanic Garden holds 3 accessions of Cirsium hydrophilum var. hydrophilum in orthodox seed collection. There are as many as 1175 seeds of this species in their collection - although some may have been used for curation testing or sent to back up.

08/05/2020

Based on an August 2020 extract of the California Plant Rescue Database, California Botanic Garden has collected 1 seed accessions of Cirsium hydrophilum var. hydrophilum from 1 plant occurrences listed in the California Natural Diversity Database. These collections together emcompass an unknown number of maternal plants

01/01/2010

habitat conversion, water pollution, changes in salinity, indirect effects of urbanization, stochastic events, mosquito abatement activities (including off-road vehicle use), competition with non-native vegetation, regulatory mechanisms, and other

01/01/2010

a few thousand individuals