Taxon Report

Eryngium pendletonense K.L. Marsden & M.G. Simpson

Pendleton button-celery

Print Report

Taxon Summary

Eryngium pendletonense, commonly known as Pendleton button-celery, is a perennial herb in the Apiaceae that is found only in California. It occurs within Coastal bluff scrub, Valley and foothill grassland, and Vernal pools, growing at elevations from 15 to 110 meters. Eryngium pendletonense is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Eryngium pendletonense K.L. Marsden & M.G. Simpson
Common Name:	Pendleton button-celery
Family:	Apiaceae
Element Code:	PDAPI0Z120
USDA Plants Symbol:
Synonyms/Other Names:	Eryngium pendletonensis

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Apr-Jun(Jul)	Apr-Jun(Jul)
Elevation:	15-110 (50-360)
General Habitats:	Coastal bluff scrub, Valley and foothill grassland, Vernal pools
Microhabitat:	Clay, Vernally Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	2
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Diego (SDG)
Quads: Name (Quad Code)
Las Pulgas Canyon (3311734), San Clemente (3311745), San Onofre Bluff (3311735)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	3	75 %
Foot traffic/trampling	2	50%
Military operations	2	50%
Non-native plant impacts	2	50%
ORV activity	1	25%
Other	1	25%
Surface water diversion	1	25%

Notes




Threats:
Threatened by military activities, hydrological alteration, and non-native plants.
Taxonomy:
See Madroño 46(1):61 (1999) for original description.

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 29 October 2025].