Arctostaphylos manzanita subsp. laevigata

Contra Costa manzanita

Family:Ericaceae

Rarity

CNPS-EB: *A2
State CNPS: 1B.2
Global Rank: G5T2
CNDDB Rank: S2

11 current natural populations

Criteria:

Small Geographical Range

Observations

Key

Ecology

Flowers February - May

Habitats:

Chaparral
Sand, Sandstone

All Arctostaphylos

References

Synonyms

Arctostaphylos laevigata
Arctostaphylos pungens subsp. laevigata

Populations

Key

Location	Pop ID	Last Recorded	Notes
Morgan Territory Rgnl Park	3	2021-04-02
Mt. Diablo State Park - East side	23	2012-05-24
Mt. Diablo State Park - North side	22	2005-07-01
Mt. Diablo State Park - South side	9	2011-04-09
Mt. Diablo State Park - South side	10	2022-03-26
Mt. Diablo State Park - South side	14	2021-06-11
Mt. Diablo State Park - South side	15	2023-04-19
Mt. Diablo State Park - South side	16	2008-10-13
Mt. Diablo State Park - South side	17	2015-06-28
Mt. Diablo State Park - South side	24	2022-09-07
Sand Creek	2	2002-12-31
Black Diamond Rgnl Preserve	1	1991-05-05	Historic
Mt. Diablo State Park - East side	4	1999-12-31	Historic
Mt. Diablo State Park - East side	5	1999-12-31	Historic
Mt. Diablo State Park - North side	20	1998-01-25	Historic
Mt. Diablo State Park - North side	21	1999-12-31	Historic
Mt. Diablo State Park - South side	8	1995-12-31	Historic
Mt. Diablo State Park - South side	11	1939-12-31	Historic
Mt. Diablo State Park - South side	12	1939-12-31	Historic
Mt. Diablo State Park - South side	13	1999-12-31	Historic
Mt. Diablo State Park - South side	18	1999-12-31	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	7	1938-06-24	Historic
Mt. Diablo State Park - unspecified or multiple sites	6	1999-12-31	Historic
Mt. Diablo State Park - West side	19	1994-12-31	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.