Lasthenia conjugens

Contra Costa goldfields

Family:Asteraceae

Rarity

CNPS-EB: *A2
State CNPS: 1B.1
FESA Status: FE
Global Rank: G1
CNDDB Rank: S1

4 current natural populations

Criteria:

Limited/Threatened Habitat
E Limit

Observations

Key

Ecology

Flowers March - June

Habitats:

Alkali Areas
Miscellaneous Wetlands
Vernal Pool

All Lasthenia

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Fremont Shoreline	11	2021-04-07
Hercules - other or unknown sites	3	2017-04-26
Newark	6	2004-04-10
Warm Springs, Fremont	9	2019-05-20
Antioch Shoreline	1	1966-12-31	Historic
Byron - other or unknown sites	4	1981-12-31	Historic
Concord - other or unknown sites	2	1946-04-20	Historic
Mt. Eden	5	1959-03-29	Historic
Newark	7	1895-05-06	Historic
Walnut Creek	8	1884-06-30	Historic
Warm Springs, Fremont	10	1999-05-04	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.