Taxon Report

Polemonium eddyense Stubbs

Mt. Eddy sky pilot

Print Report

Taxon Summary

Polemonium eddyense, commonly known as Mt. Eddy sky pilot, is a perennial herb in the Polemoniaceae that is found only in California. It occurs within Alpine boulder and rock field, growing at elevations from 2480 to 2750 meters. Polemonium eddyense is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Polemonium eddyense Stubbs
Common Name:	Mt. Eddy sky pilot
Family:	Polemoniaceae
Element Code:	PDPLM0E0S0
USDA Plants Symbol:	POED
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	2480-2750 (8135-9025)
General Habitats:	Alpine boulder and rock field
Microhabitat:	Rocky, Serpentine (sometimes)
Microhabitat Details:	Sometimes peridotite

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_UCSC
CRPR Changes:	added to 1B.2 on 2014-02-10

Occurrence Data from the CNDDB


Total Occurrences:	2
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	1

Location


California Endemic: True
California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Mount Eddy (4112234)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	2	100 %
Foot traffic/trampling	2	100%
Other	2	100%

Notes



Known only from the Klamath Ranges. Included in P. chartaceum in TJM (1993) and TJM 2. See Fremontia 22(2):24-26 (1993) and Madroño 45(3):200-209 (1998) for information about biosystematic study, and Madroño 60(3):243-248 (2013) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2014-02-10

Polemonium eddyense account for potential Species of Conservation Concern evaluation (2021)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 19 November 2025].