Taxon Report

Phacelia inyoensis (Macbr.) J.T. Howell

Inyo phacelia

Print Report

Taxon Summary

Phacelia inyoensis, commonly known as Inyo phacelia, is a annual herb in the Hydrophyllaceae that is found only in California. It occurs within Meadows and seeps, growing at elevations from 915 to 3200 meters. Phacelia inyoensis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Phacelia inyoensis (Macbr.) J.T. Howell
Common Name:	Inyo phacelia
Family:	Hydrophyllaceae
Element Code:	PDHYD0C2F0
USDA Plants Symbol:	PHIN4
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Apr-Aug	Apr-Aug
Elevation:	915-3200 (3000-10500)
General Habitats:	Meadows and seeps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_SBBG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	19
Element Occurrence Ranks:
Excellent (A)	6
Good (B)	4
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	8

Location


California Endemic: True
California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)
Quads: Name (Quad Code)
Benton Hot Springs (3711875), Big Pine (3711823), Chidago Canyon (3711854), Convict Lake (3711857), Crestview (3711878), Fish Slough (3711844), Lone Pine (3611851), Mt. Langley (3611852), Old Mammoth (3711868), Poleta Canyon (3711833), Whitmore Hot Springs (3711867)

Threat List Data from the CNDDB


Threat List Total:	5
EOs with Threat Listed:	Total EOs	% of EOs
	9	47 %
Grazing	7	36%
ORV activity	3	15%
Foot traffic/trampling	3	15%
Recreational use (non-ORV)	1	5%
Non-native plant impacts	1	5%

Notes



Threatened by trampling, grazing and vehicles. See Contributions from the Gray Herbarium 49:41 (1917) for original description, Leaflets of Western Botany 4:16 (1944) for revised nomenclature, and Madroño 28(3):121-132 (1981) for taxonomic treatment.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].