Viola purpurea subsp. quercetorum

Rarity

CNPS-EB: C

16 current natural populations

Observations

Key

Ecology

Flowers February - July

Habitats:

Grassland (Annual or Perennial)
Scrub (Coastal or Interior)

All Viola

References

Synonyms

Viola quercetorum

Populations

Key

Location	Pop ID	Last Recorded	Notes
Mines Road/Arryo Mocho	11	2024-04-10
Mines Road/Arryo Mocho	12	2003-05-24
Mines Road/Arryo Mocho	13	2008-04-19
Mines Road/Arryo Mocho	15	2023-04-18
Mines Road/Arryo Mocho	21	2018-04-26
Mines Road/Arryo Mocho	22	2021-03-26
Mt. Diablo State Park - East side	7	2023-03-05
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	3	2022-04-09
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	6	2021-05-06
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	8	2009-06-16
Ohlone Rgnl Wilderness	17	2023-05-26
Ohlone Rgnl Wilderness	19	2013-12-31
Ohlone Rgnl Wilderness	23	2020-04-27
Ohlone Rgnl Wilderness	24	2020-04-24
Ohlone Rgnl Wilderness	25	2020-05-21
Ohlone Rgnl Wilderness	26	2023-05-26
Cedar Mountain	1	1931-12-31	Historic
Lawrence Livermore Lab, Site 300, Corral Hollow	2	1986-12-31	Historic
Los Vaqueros Watershed	10	1988-12-31	Historic
Mines Road/Arryo Mocho	14	1962-05-06	Historic
Mt. Diablo State Park - South side	4	1939-12-31	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	5	1991-05-26	Historic
Mt. Diablo State Park - Summit and Upper area - 2500 ft and abo	9	1933-05-09	Historic
Ohlone Rgnl Wilderness	18	1998-04-10	Historic
San Antonio Reservoir - SFWD	20	1895-03-28	Historic
Tarraville Creek, Mines Rd	16	1997-05-10	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.