Microseris douglasii subsp. tenella

silver puffs

Family:Asteraceae

Rarity

CNPS-EB: A2

8 current natural populations

Criteria:

Declining

Observations

Key

Ecology

Flowers March - June

Habitats:

Grassland (Annual or Perennial)
Serpentine or Serpentine-derived soils
Vernal Pool

All Microseris

M. acuminata (A1)
M. bigelovii (A1x)
M. campestris (A2)
M. douglasii subsp. tenella
M. elegans (A1)
M. sylvatica (*A2)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Brushy Peak - EBRPD	25	2024-03-25
Byron - other or unknown sites	24	2023-05-03
Deer Valley	3	2025-04-18
Lawrence Livermore Lab, Site 300, Corral Hollow	6	2021-12-31
Los Vaqueros Watershed	15	2003-04-27
Pinole - EBMUD land nearby	19	2003-04-03
Springtown Wetlands Preserve	26	2024-04-12
Sunol Rgnl Wilderness	23	2022-05-06
Altamont Pass	1	1946-04-01	Historic
Antioch - other or unknown sites	2	1903-05-06	Historic
Brushy Peak Rgnl Park - other or unknown sites	22	1862-12-31	Historic
Byron Hot Springs area	4	1993-03-28	Historic
Corral Hollow Area	5	1935-04-11	Historic
Danville	9	1898-05-31	Historic
El Cerrito Hills	10	1956-04-28	Historic
Franklin Ridge	11	1999-04-29	Historic
Fremont Flatlands and Hills	13	1894-12-31	Historic
Grizzly Peak - other or unknown sites	12	1904-05-17	Historic
Los Mochos Boy Scout Camp, Mines Rd	14	1996-12-31	Historic
Mountain House	16	1930-04-17	Historic
Mt. Diablo State Park - North side	7	1997-04-20	Historic
Mt. Diablo State Park - West side	8	1933-04-15	Historic
Newark	17	1895-05-06	Historic
Orinda Area	18	1997-12-31	Historic
Richmond Hills	20	1939-04-25	Historic
Siesta Valley, Upper - EBMUD land	21	1997-12-31	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.