Taxon Details

Phacelia argentea

sand dune phacelia

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Taxon Summary:

Phacelia argentea, commonly known as sand dune phacelia, is a perennial herb in the Hydrophyllaceae that is found in California and elsewhere. It occurs within Coastal dunes, growing at elevations from 3 to 25 meters. Phacelia argentea is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Phacelia argentea Nels. & Macbr.
Common Name: sand dune phacelia
Family:	Hydrophyllaceae
Element Code:	PDHYD0C070
USDA Plants Symbol:	PHAR
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FT (2023-09-21)
State List:	None
Global Rank:	G2
State Rank:	S1
Other Status:	SB_BerrySB
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2023-12-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jun-Aug

Elevation:
3 - 25 meters
10 - 80 feet

General Habitats:

Coastal dunes

Microhabitat Details:

Microhabitat:

Notes

Notes: See Botanical Gazette 61: 34 (1916) for original description.
Threats: Threatened by coastal development, vehicles, and non-native plants. State-listed as Threatened in OR.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	15	94 %
Non-native plant impacts	11	68%
ORV activity	6	37%
Recreational use (non-ORV)	3	18%
Foot traffic/trampling	2	12%
Landfill	2	12%
Mining	2	12%
Grazing	1	6%
Development	1	6%
Erosion/runoff	1	6%
Road/trail construction/maint.	1	6%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					16
A	B	C	D	X	U
3	11	1	0	0	1

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	9

Presence:
Presumed Extant	16
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Oregon (OR)

California Counties and Islands: Name (Code)
Del Norte (DNT)

Quads: Name (Quad Code)
Crescent City (4112472), Smith River (4112482)

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

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CNPS Rare Plant Inventory