Cicuta douglasii

water-hemlock

Family:Apiaceae

Rarity

CNPS-EB: B

7 current natural populations

Observations

CNPS-EB Database ⓘ
Calflora (group) ⓘ
Calflora (public)
iNaturalist
- Genus Cicuta
- Cicuta douglasii
CCH2

Key

Ecology

Flowers June - September

Habitats:

Freshwater Marsh
Miscellaneous Wetlands

All Cicuta

C. douglasii
C. maculata var. bolanderi (*A1)

References

Populations

Key

Location	Pop ID	Last Recorded	Notes
Briones Rgnl Park	1	2020-04-12
Leona Heights Rgnl Park, or nearby	6	2020-05-25
Rocky Ridge - EBMUD land near Las Trampas	5	2021-05-01
Siesta Valley, Lower - EBMUD land	11	2025-03-21
Sunol Rgnl Wilderness	8	2025-07-21
Sunol Rgnl Wilderness	12	2025-05-13
Wildcat Rgnl Park	10	2024-03-13
Chabot Rgnl Park	2	1992-12-31	Historic
Frank's Tract	3	1987-01-01	Historic
Gateway area	4	1999-12-31	Historic
Lake Temescal Rgnl Park	9	1995-06-03	Historic
Los Vaqueros Watershed	7	1988-12-31	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.