Taxon Report

Lomatium peckianum Math. & Const.

Peck's lomatium

Print Report

Taxon Summary

Lomatium peckianum, commonly known as Peck's lomatium, is a perennial herb in the Apiaceae that is found in California and elsewhere. It occurs within Chaparral, Cismontane woodland, Lower montane coniferous forest, and Pinyon and juniper woodland, growing at elevations from 700 to 1800 meters. Lomatium peckianum is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Lomatium peckianum Math. & Const.
Common Name:	Peck's lomatium
Family:	Apiaceae
Element Code:	PDAPI1B1G0
USDA Plants Symbol:	LOPE3
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-May(Jun)	Apr-May(Jun)
Elevation:	700-1800 (2295-5905)
General Habitats:	Chaparral, Cismontane woodland, Lower montane coniferous forest, Pinyon and juniper woodland
Microhabitat:	Volcanic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	12
Element Occurrence Ranks:
Excellent (A)	2
Good (B)	2
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	7

Location


California Endemic: False
California Counties and Islands: Name (Code)
Siskiyou (SIS), Trinity (TRI)
Quads: Name (Quad Code)
Badger Mtn. (4112276), Buckhorn Bally (4112287), Cottonwood Peak (4112286), Dewey Gulch (4112273), Hawkinsville (4112275), Hornbrook (4112285), Iron Gate Reservoir (4112284), Montague (4112265), Mount Eddy (4112234), Weed (4112244), Yreka (4112266)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	9	75 %
Development	3	25%
Road/trail construction/maint.	3	25%
Grazing	2	16%
Logging	2	16%
Other	2	16%
Wood cutting or brush clearing	1	8%

Notes



Threatened by development. See Bulletin of the Torrey Botanical Club 69:155 (1942) for original description.
Threats:

Taxonomy:

Selected References

Lomatium peckianum 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 7 December 2025].