Quercus wislizeni var. frutescens

Rarity

CNPS-EB: B

10 current natural populations

Observations

Key

Ecology

Flowers March - May

Habitats:

Chaparral
Rock, Tallus, Scree
Sand, Sandstone

All Quercus

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
EBMUD land on San Pablo Ridge	24	2016-07-10
Flicker Ridge - EBMUD	16	2023-01-23
Leona Heights Rgnl Park, or nearby	18	2024-10-27
Los Mochos Boy Scout Camp, Mines Rd	19	2022-05-21
Morgan Territory Rgnl Park	21	2003-06-08
Mt. Diablo State Park - North side	6	2024-02-21
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	13	2025-05-16
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	14	2025-10-19
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	15	2025-01-08
Tilden Rgnl Park - Grizzly Peak	25	2001-12-31
Black Diamond Rgnl Preserve	1	1991-05-05	Historic
Black Diamond Rgnl Preserve	2	1991-07-21	Historic
Chabot Rgnl Park	4	1991-03-17	Historic
Huckleberry Rgnl Preserve	17	1991-02-17	Historic
Lafayette Ridge, Briones Rgnl Park	3	1990-07-01	Historic
Las Trampas Rgnl Wilderness	20	1992-02-09	Historic
Mt. Diablo State Park - East side	5	1996-04-14	Historic
Mt. Diablo State Park - North side	7	1991-04-07	Historic
Mt. Diablo State Park - South side	8	1990-03-11	Historic
Mt. Diablo State Park - South side	9	1995-03-14	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	10	1991-04-21	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	11	1991-04-28	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	12	1991-05-18	Historic
Redwood Rgnl Park	22	1990-05-19	Historic
Sobrante Ridge Rgnl Park	23	1991-01-13	Historic
Walpert Ridge	26	1998-12-31	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.