Microseris campestris

San Joaquin microseris

Family:Asteraceae

Rarity

CNPS-EB: A2

5 current natural populations

Criteria:

W Limit
Declining

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Microseris
- Microseris campestris
CCH2

Key

Ecology

Flowers April - June

Habitats:

Grassland (Annual or Perennial)
Vernal Pool

All Microseris

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Livermore - other or unknown sites	16	2024-05-15
Los Vaqueros Watershed	8	2022-03-14
Los Vaqueros Watershed	15	2025-03-22
Springtown Wetlands Preserve	12	2024-04-12
Vasco Hills	14	2023-04-07
Altamont Pass	1	1953-12-31	Historic
Bethany Reservoir - S of Byron	2	1986-04-15	Historic
Byron - other or unknown sites	3	1957-04-04	Historic
Byron - other or unknown sites	4	1990-04-23	Historic
Corral Hollow Area	5	1938-12-31	Historic
Deer Valley	6	1998-12-31	Historic
Leona Heights Rgnl Park, or nearby	7	1937-05-01	Historic
Livermore Valley	9	1953-12-31	Historic
Livermore Valley	10	1952-12-31	Historic
Mines Road/Arryo Mocho	11	1926-12-31	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.