Camissonia contorta

contorted primrose

Family:Onagraceae

Rarity

CNPS-EB: C

16 current natural populations

Criteria:

Small Populations

Observations

Key

Ecology

Flowers May - June

Habitats:

Chaparral
Open Dry Slope
Sand, Sandstone
Scrub (Coastal or Interior)
Woodland

All Camissonia

C. campestris subsp. campestris (A1x)

C. contorta

C. strigulosa (A1)

References

Synonyms

Oenothera contorta

Populations

Key

Location	Pop ID	Last Recorded	Notes
Antioch Dunes	1	2022-04-20
Big Break, Antioch	14	2017-06-24
Black Diamond - Markley Canyon	2	2022-12-31
Las Trampas Rgnl Wilderness	19	2023-05-20
Lawrence Livermore Lab, Site 300, Corral Hollow	16	2021-12-31
Lime Ridge area	3	2019-04-26
Mines Road/Arryo Mocho	4	2003-05-24
Oakley	10	2018-04-10
Oakley	11	2002-05-03
Oakley	12	2005-03-31
Ohlone Rgnl Wilderness	5	2024-04-19
Ohlone Rgnl Wilderness	6	2024-04-19
Ohlone Rgnl Wilderness	7	2023-05-26
Ohlone Rgnl Wilderness	15	2020-04-24
Ohlone Rgnl Wilderness	17	2023-06-09
Ohlone Rgnl Wilderness	18	2023-06-09
Ohlone Rgnl Wilderness	8	1991-05-20	Historic
Ohlone Rgnl Wilderness	9	1992-05-24	Historic
Sunol Rgnl Wilderness	13	1991-05-06	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.