Species Details

Phacelia phacelioides

Mt. Diablo phacelia

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Classification

Scientific Name: Phacelia phacelioides (Benth.) Brand
Common Name: Mt. Diablo phacelia
Family:	Hydrophyllaceae
Element Code:	PDHYD0C3Q0
USDA Plants Symbol:	PHPH
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-12-06

Ecology and Life History

Lifeform: annual herb

Blooming Period: Apr-May

Elevation:
500 - 1370 meters
1640 - 4495 feet

General Habitats:

Chaparral
Cismontane woodland

Microhabitat Details:

Microhabitat:

Rocky

Notes

Notes: Known from fewer than twenty occurrences. Many occurrences historical; need field surveys. Possibly threatened by foot traffic and trail construction.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	5
	Total EOs	% of EOs
EOs with Threat Listed:	3	8 %
Road/trail construction/maint.	2	5%
Erosion/runoff	1	2%
Foot traffic/trampling	1	2%
Grazing	1	2%
Non-native plant impacts	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					40
A	B	C	D	X	U
2	4	0	1	0	33

Occurrence Status:
Historical >20 Years	12
Recent <=20 Years	28

Presence:
Presumed Extant	40
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Alameda (ALA), Contra Costa (CCA), Fresno (FRE), San Benito (SBT), Santa Clara (SCL), Stanislaus (STA)

Quads: Name (Quad Code)
Clayton (3712188), Copper Mtn. (3712143), Diablo (3712178), Eylar Mtn. (3712145), Idria (3612046), Isabel Valley (3712135), Lick Observatory (3712136), Lone Tree Creek (3712154), Mississippi Creek (3712124), Mt. Boardman (3712144), Mt. Stakes (3712134), San Benito Mtn. (3612036), Santa Rita Peak (3612035), Solyo (3712153)

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