Cirsium cymosum var. cymosum

peregrine thistle

Family:Asteraceae

Rarity

CNPS-EB: B-PV

19 current natural populations

Criteria:

Small Populations

Observations

Key

Ecology

Flowers April - July

Habitats:

Forest
Grassland (Annual or Perennial)
Scrub (Coastal or Interior)
Serpentine or Serpentine-derived soils
Woodland

All Cirsium

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Black Diamond Rgnl Preserve	2	2010-04-13
Briones Rgnl Park	31	2023-06-16
Grizzly Peak - other or unknown sites	12	2000-05-29
Lawrence Livermore Lab, Site 300, Corral Hollow	5	2021-12-31
Los Mochos Boy Scout Camp, Mines Rd	7	2023-05-20
Los Mochos Boy Scout Camp, Mines Rd	14	2023-05-23
Los Mochos Boy Scout Camp, Mines Rd	25	2023-05-20
Mines Road/Arryo Mocho	15	2024-05-29
Mines Road/Arryo Mocho	16	2020-04-12
Mines Road/Arryo Mocho	26	2023-05-23
Mines Road/Arryo Mocho	27	2023-05-23
Mines Road/Arryo Mocho	28	2023-05-23
Mines Road/Arryo Mocho	29	2023-05-23
Mines Road/Arryo Mocho	30	2023-05-19
Mt. Diablo State Park - North side	6	2003-03-21
Mt. Diablo State Park - West of Mt. Zion	9	2003-06-30
Sunol Rgnl Wilderness	21	2008-05-07
Tesla, Corral Hollow	4	2015-04-21
Tilden Rgnl Park - Jewel Lake/Nature area	24	2001-06-09
Altamont Pass	1	1994-05-16	Historic
Brushy Peak Rgnl Park - LARPD	3	1997-12-31	Historic
Danville	11	1936-05-07	Historic
Morgan Territory Rgnl Park	13	1999-12-31	Historic
Mt. Diablo State Park - North side	8	1935-05-22	Historic
Mt. Diablo State Park - South side	10	1942-12-31	Historic
Niles Canyon area	17	1897-06-20	Historic
Ohlone Rgnl Wilderness	18	1998-06-09	Historic
Patterson Pass	20	1938-12-31	Historic
Pt. Richmond Area	19	1994-12-31	Historic
Sunol Rgnl Wilderness	22	1993-06-25	Historic
Sunol Rgnl Wilderness	23	1970-06-30	Historic

The list of populations shows the distinct populations identified by the CNPS-EB Rare and Unusual Plants Committee. The locations in this list are very general. More specific location details can be obtained from the links in the Observations section (for some of these links, a login is required).

Font

Populations in bold type have precise coordinates available for field volunteers and researchers.

Populations in normal type are only known from a description of the location; no precise coordinates are available.

Background

Populations with a white background have been observed in the last 25 years.

Populations with a blue background have not been observed for at least 25 years.

Populations with an orange background have an uncertain location or identification, or are planted.

Columns

Pop ID is a label that identifies the population. Many locations have more than one population of a species, and the population ID is used to distinguish them.