Taxon Report

Eriogonum pyrolifolium Hook. var. pyrolifolium

pyrola-leaved buckwheat

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Taxon Summary

Eriogonum pyrolifolium var. pyrolifolium, commonly known as pyrola-leaved buckwheat, is a perennial herb in the Polygonaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field (pumice, and sandy or gravelly), growing at elevations from 1675 to 3200 meters. Eriogonum pyrolifolium var. pyrolifolium is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Eriogonum pyrolifolium Hook. var. pyrolifolium
Common Name:	pyrola-leaved buckwheat
Family:	Polygonaceae
Element Code:	PDPGN084Z2
USDA Plants Symbol:	ERPYP
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jul-Sep	Jul-Sep
Elevation:	1675-3200 (5495-10500)
General Habitats:	Alpine boulder and rock field
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G4T4
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	15
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	12

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS), Shasta (SHA), Siskiyou (SIS)
Quads: Name (Quad Code)
Bogard Buttes (4012152), Lassen Peak (4012145), Little Glass Mtn. (4112156), Manzanita Lake (4012155), McCloud (4112232), Medicine Lake (4112155), Mt. Harkness (4012143), Mt. Shasta (4112242), Prospect Peak (4012153), Reading Peak (4012144), Red Cinder (4012142), West of Kephart (4112154), West Prospect Peak (4012154)

Threat List Data from the CNDDB


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

Notes



See E. pyrolifolium in The Jepson Manual. See Phytologia 66(4):355-356 (1989) for taxonomic treatment.
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].