Taxon Report

Ivesia aperta (J.T. Howell) Munz var. canina B. Ertter

Dog Valley ivesia

Print Report

Taxon Summary

Ivesia aperta var. canina, commonly known as Dog Valley ivesia, is a perennial herb in the Rosaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest (openings), and Meadows and seeps (xeric), growing at elevations from 1600 to 2000 meters. Ivesia aperta var. canina is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Ivesia aperta (J.T. Howell) Munz var. canina B. Ertter
Common Name:	Dog Valley ivesia
Family:	Rosaceae
Element Code:	PDROS0X012
USDA Plants Symbol:	IVAPC
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	1600-2000 (5250-6560)
General Habitats:	Lower montane coniferous forest, Meadows and seeps
Microhabitat:	Rocky, Volcanic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G2G3T1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_UCSC; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	5
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	2
Poor (D)	0
None (X)	0
Unknown (U)	3

Location


California Endemic: False
California Counties and Islands: Name (Code)
Sierra (SIE)
Quads: Name (Quad Code)
Dog Valley (3912051)

Threat List Data from the CNDDB


Threat List Total:	7
EOs with Threat Listed:	Total EOs	% of EOs
	5	100 %
Dam/Inundation	4	80%
Grazing	4	80%
ORV activity	4	80%
Recreational use (non-ORV)	2	40%
Road/trail construction/maint.	2	40%
Logging	2	40%
Improper burning regime	1	20%

Notes



Known only from Dog Valley. Threatened by reservoir and recreation development, and possibly by vehicle use and grazing. Interim management guide prepared by USFS in 1992. See Brittonia 40(4):398 (1988) 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 20 October 2025].