Euphorbia serpillifolia subsp. serpillifolia

thyme-leaved spurge

Family:Euphorbiaceae

Rarity

CNPS-EB: C

23 current natural populations

Observations

Key

Ecology

Flowers August - October

Habitats:

Miscellaneous

All Euphorbia

E. ocellata subsp. ocellata (B)
E. serpillifolia subsp. serpillifolia

References

Synonyms

Chamaesyce serpyllifolia subsp. serpyllifolia

Populations

Key

Location	Pop ID	Last Recorded	Notes
Briones Reservoir, EBMUD	25	2020-11-14
Cull Canyon Rgnl Park	2	2002-12-31
Del Valle Regional Park	6	2023-09-02
Del Valle Regional Park	21	2024-06-09
Dublin, E of 680, N of 580	19	2019-12-31
EBMUD land on San Pablo Ridge	24	2024-09-13
Livermore - other or unknown sites	26	2025-08-01
Marsh Creek	28	2021-09-13
Mines Road/Arryo Mocho	20	2023-08-03
Mines Road/Arryo Mocho	22	2024-07-13
Mt. Diablo State Park - South side	4	2024-07-27
Mt. Diablo State Park - West side	5	2002-06-01
Pleasanton Area	23	2019-10-10
Richmond Shoreline	10	2021-08-14
Round Valley Rgnl Park	11	2017-09-09
San Francisco Water District land, Sunol	12	2009-12-31
San Pablo Reservoir - EBMUD	13	2022-07-30
San Pablo Reservoir - EBMUD	16	2020-10-17
San Pablo Reservoir - EBMUD	17	2022-07-16
San Pablo Reservoir - EBMUD	18	2023-09-01
Springtown Wetlands Preserve	14	2003-06-24
Tesla, Corral Hollow	1	2016-09-12
Walnut Creek	27	2025-05-27
Diablo Foothills Rgnl Park	3	1997-12-31	Historic
Livermore - other or unknown sites	8	1997-09-20	Historic
Los Mochos Boy Scout Camp, Mines Rd	7	1996-07-12	Historic
Pt. Molate	9	1998-12-31	Historic
Sunol Rgnl Wilderness	15	1970-08-15	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.