Dirca occidentalis

Rarity

CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G2
CNDDB Rank: S2

54 current natural populations

Criteria:

E Limit
Small Geographical Range

Observations

Key

Ecology

Flowers November - March

Habitats:

Forest
Riparian
Scrub (Coastal or Interior)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Berkeley Hills	12	2021-11-25
Caldecott Corridor, Berkeley	21	2009-02-19
Canyon Area - EBMUD land nearby	33	2008-05-30
Chabot Rgnl Park	44	2021-03-05
Chabot Rgnl Park	45	2003-03-17
Claremont Canyon Rgnl Park	14	2024-03-07
Claremont Canyon Rgnl Park	60	2009-03-02
Claremont Canyon Rgnl Park	66	2024-07-17
Claremont Canyon Rgnl Park	69	2024-03-31
Crockett	1	2021-02-18
Crockett	2	2021-02-22
EBMUD land near Orinda	19	2014-02-11
EBMUD land near Orinda	59	2020-02-08
EBMUD land near Redwood Rgnl Park	32	2007-02-19
EBMUD land near Sibley	26	2007-12-31
Franklin Ridge	62	2019-01-13
Gateway area	50	2022-07-18
Gateway area	51	2022-07-18
Gateway area, EBMUD land	24	2021-03-07
Gateway area, EBMUD land	25	2021-03-07
Grizzly Peak Blvd, Berkeley	67	2024-02-28
Huckleberry Rgnl Preserve	29	2021-02-16
Huckleberry Rgnl Preserve	30	2021-02-16
Huckleberry Rgnl Preserve	31	2021-02-17
Huckleberry Rgnl Preserve	57	2021-02-16
Huckleberry Rgnl Preserve	63	2021-02-20
Joaquin Miller Park, Oakland	40	2024-03-10
Joaquin Miller Park, Oakland	58	2021-12-17
Moraga - other or unknown sites	36	2024-08-29
Oakland Hills - North	39	2005-01-31
Oakland Hills - North	68	2024-02-26
Redwood Rgnl Park	34	2009-02-10
Redwood Rgnl Park	41	2021-12-12
Redwood Rgnl Park	42	2022-03-31
San Pablo Creek North - EBMUD	23	2007-03-07
Siesta Valley, Lower - EBMUD land	17	2022-04-04
Siesta Valley, Upper - EBMUD land	15	2024-02-24
Siesta Valley, Upper - EBMUD land	16	2024-04-07
Siesta Valley, Upper - EBMUD land	55	2022-01-30
Sobrante Ridge Rgnl Park	61	2023-02-18
Tilden Rgnl Park - Grizzly Peak	10	2024-02-28
Tilden Rgnl Park - Grizzly Peak	54	2023-02-04
Tilden Rgnl Park - Jewel Lake/Nature area	5	2021-02-28
Tilden Rgnl Park - Lake Anza	9	2024-02-16
Tilden Rgnl Park - other or unknown sites	6	2021-03-28
Tilden Rgnl Park - other or unknown sites	52	2023-01-19
Tilden Rgnl Park - other or unknown sites	64	2024-02-24
Tilden Rgnl Park - other or unknown sites	65	2024-02-24
Tilden Rgnl Park - Vollmer Peak	11	2024-02-28
Tilden Rgnl Park - Wildcat Gorge	8	2021-03-21
Tilden Rgnl Park - Wildcat Gorge	53	2023-01-19
Wildcat Rgnl Park	47	2021-11-28
Wildcat Rgnl Park	48	2021-03-07
Wildcat Rgnl Park	49	2021-08-28
Caldecott Corridor, Oakland	27	1993-12-31	Historic
EBMUD land on San Pablo Ridge	18	1999-12-31	Historic
Kennedy Grove Rgnl Park	3	1991-12-31	Historic
Lake Temescal Rgnl Park	28	1892-02-28	Historic
Leona Heights Rgnl Park, or nearby	46	1923-12-31	Historic
Oakland Hills - North	37	1920-02-03	Historic
Oakland Hills - North	38	1925-03-30	Historic
Redwood Rgnl Park	43	1993-02-28	Historic
San Leandro Creek South - EBMUD	35	1926-03-27	Historic
San Pablo Creek South - EBMUD	20	1999-12-31	Historic
Strawberry Canyon	13	1989-12-31	Historic
Tilden Rgnl Park - other or unknown sites	7	1990-12-31	Historic
Wildcat Rgnl Park	4	1996-12-31	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.