Taxon Report

Perideridia leptocarpa Chuang & Const.

narrow-seeded yampah

Print Report

Taxon Summary

Perideridia leptocarpa, commonly known as narrow-seeded yampah, is a perennial herb in the Apiaceae that is found in California and elsewhere. It occurs within Broadleafed upland forest, Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 425 to 1585 meters. Perideridia leptocarpa is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Perideridia leptocarpa Chuang & Const.
Common Name:	narrow-seeded yampah
Family:	Apiaceae
Element Code:	PDAPI1N0A0
USDA Plants Symbol:	PELE6
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	425-1585 (1395-5200)
General Habitats:	Broadleafed upland forest, Cismontane woodland, Lower montane coniferous forest
Microhabitat:	Serpentine (usually)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3Q
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Siskiyou (SIS)
Quads: Name (Quad Code)
Cecilville (4112322), Sawyers Bar (4112332)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Taxonomic questions; possibly belongs in P. oregana. See University of California Publications in Botany 55:51-54 (1969) for original description.
Threats:

Taxonomy:

Selected References

USFS Potential Species of Conservation Concern Profile

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].