Species Details

Phacelia greenei

Scott Valley phacelia

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Classification

Scientific Name: Phacelia greenei J.T. Howell
Common Name: Scott Valley phacelia
Family:	Hydrophyllaceae
Element Code:	PDHYD0C1V0
USDA Plants Symbol:	PHGR2
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:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-05-10

Ecology and Life History

Lifeform: annual herb
Blooming Period: Apr-Jun
Elevation: 800 - 2440 meters 2625 - 8005 feet
General Habitat: Closed-cone coniferous forest Lower montane coniferous forest Subalpine coniferous forest Upper montane coniferous forest
General Micro Habitat:
Micro Habitat: Serpentinite

Notes

Notes: Known only in the vicinity of Scott Valley.
Threats: Possibly threatened by mining.
Taxonomy: Similar to the more widespread P. humilis which is sometimes mistaken for P. greenei outside of Scott Valley; differentiated from P. humilis in having glabrous vs. short-hairy stamens in addition to other characters.
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					24
A	B	C	D	X	U
5	10	3	0	0	6

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	13

Presence:
Presumed Extant	24
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
Callahan (4112237), China Mtn. (4112245), Duzel Rock (4112256), Eaton Peak (4112238), Fort Jones (4112257), Greenview (4112258), McConaughy Gulch (4112247), Scott Mountain (4112236), South China Mtn. (4112235), Yreka (4112266)

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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Counties Quads

CNPS Rare Plant Inventory