Species Details

Cicuta maculata var. bolanderi

Bolander's water-hemlock

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Classification

Scientific Name: Cicuta maculata L. var. bolanderi (S. Watson) G.A. Mulligan
Common Name: Bolander's water-hemlock
Family:	Apiaceae
Element Code:	PDAPI0M051
USDA Plants Symbol:	CIMAB
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	None
Global Rank:	G5T4T5
State Rank:	S2?
Other Status:	SB_CalBG/RSABG
CRPR Changes: changed from 2.1 to 2B.1 on 2013-06-12 added to 2.1 on 2009-01-05
Add Date:	1974-01-01
Date Edited:	2023-08-01

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Sep

Elevation:
0 - 200 meters
0 - 655 feet

General Habitats:

Marshes and swamps (brackish, coastal, freshwater)

Microhabitat Details:

Microhabitat:

Notes

Notes:
Threats: Threatened by development, non-native plants, and hydrological alterations.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	1	6 %
Erosion/runoff	1	5%
Recreational use (non-ORV)	1	5%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					17
A	B	C	D	X	U
0	2	1	0	0	14

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	6

Presence:
Presumed Extant	17
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), California (CA), New Mexico (NM), Washington (WA)

California Counties and Islands: Name (Code)
Contra Costa (CCA), Marin (MRN), Sacramento (SAC), Santa Barbara (SBA)*, Solano (SOL)

Quads: Name (Quad Code)
Antioch North (3812117), Benicia (3812212), Birds Landing (3812127), Brentwood (3712186), Briones Valley (3712282), Bruceville (3812134), Casmalia (3412075), Courtland (3812135), Dozier (3812137), Drakes Bay (3812218), Fairfield South (3812221), Honker Bay (3812118), Inverness (3812217), Isleton (3812125), Jersey Island (3812116), Thornton (3812124), Tomales (3812228), Vine Hill (3812211)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:

Proposed Addition to CRPR 2.1, G5T3T4 / S2.1 (2009)