Taxon Report

Drymocallis cuneifolia Rydb. var. ewanii (D.D. Keck) Ertter

Ewan's woodbeauty

Print Report

Taxon Summary

Drymocallis cuneifolia var. ewanii, commonly known as Ewan's woodbeauty, is a perennial herb in the Rosaceae that is found only in California. It occurs within Lower montane coniferous forest (near seeps, springs), and Meadows and seeps, growing at elevations from 1900 to 2400 meters. Drymocallis cuneifolia var. ewanii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Drymocallis cuneifolia Rydb. var. ewanii (D.D. Keck) Ertter
Common Name:	Ewan's woodbeauty
Family:	Rosaceae
Element Code:	PDROS1B0S3
USDA Plants Symbol:
Synonyms/Other Names:	Potentilla glandulosa Lindl. ssp. ewanii Keck

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Jul	Jun-Jul
Elevation:	1900-2400 (6235-7875)
General Habitats:	Lower montane coniferous forest, Meadows and seeps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G2T2
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG; SB_USDA; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	5
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	2
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	2

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX)
Quads: Name (Quad Code)
Crystal Lake (3411737)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	2	40 %
Road/trail construction/maint.	2	40%

Notes



Known only from the Dawson Saddle area of the San Gabriel Mtns. Threatened by foot traffic, horticultural collecting, recreational activities. Possibly threatened by hydrological alterations and water diversion. See Carnegie Institution of Washington Publication 520:47 (1940) for original description.
Threats:

Taxonomy:

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 15 July 2025].