Quercus durata var. durata

leather oak

Family:Fagaceae

Rarity

CNPS-EB: B

11 current natural populations

Criteria:

Limited/Threatened Habitat
Small Populations

Observations

Key

Ecology

Flowers April - May

Habitats:

Chaparral
Serpentine or Serpentine-derived soils

All Quercus

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Cedar Mountain	1	2005-07-16
Los Mochos Boy Scout Camp, Mines Rd	10	2022-03-05
Mines Road/Arryo Mocho	12	2017-01-25
Mt. Diablo State Park - North side	2	2021-01-16
Mt. Diablo State Park - North side	3	2008-12-31
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	4	2024-09-29
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	14	2021-03-26
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	16	2021-04-29
San Francisco Water District land, Sunol	15	2021-01-25
Sunol Rgnl Wilderness	13	2021-02-07
Sunol Rgnl Wilderness	17	2021-07-26
Garin Rgnl Park	7	1999-12-31	Historic
Garin Rgnl Park	8	1994-05-13	Historic
Garin Rgnl Park	9	1994-05-13	Historic
Man Ridge, Mines Rd.	11	1985-12-31	Historic
Mt. Diablo State Park - unspecified or multiple sites	6	1935-12-31	Historic
Mt. Diablo State Park - West side	5	1991-03-31	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.