Taxon Report

Phacelia barnebyana J.T. Howell

Barneby's phacelia

Print Report

Taxon Summary

Phacelia barnebyana, commonly known as Barneby's phacelia, is a annual herb in the Hydrophyllaceae that is found in California and elsewhere. It occurs within Great Basin scrub, and Pinyon and juniper woodland, growing at elevations from 1600 to 2700 meters. Phacelia barnebyana is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Phacelia barnebyana J.T. Howell
Common Name:	Barneby's phacelia
Family:	Hydrophyllaceae
Element Code:	PDHYD0C0C0
USDA Plants Symbol:	PHBA
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: (Apr)May-Jul	(Apr)May-Jul
Elevation:	1600-2700 (5250-8860)
General Habitats:	Great Basin scrub, Pinyon and juniper woodland
Microhabitat:	Carbonate (usually), Gravelly, Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G3?
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12 added to 2.3 on 2007-01-03

Occurrence Data from the CNDDB


Total Occurrences:	9
Element Occurrence Ranks:
Excellent (A)	2
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	7

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Clark Mtn. (3511555), Mazourka Peak (3611881), Mescal Range (3511545), New York Butte (3611768)?, Pachalka Spring (3511556), Panamint (3611711), Tin Mountain (3611784)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	11 %
Non-native plant impacts	1	11%

Notes



See Leaflets of Western Botany III (8): 191-192 (1942) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2007-01-03

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 December 2025].