Taxon Report

Ivesia kingii Wats. var. kingii

alkali ivesia

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Taxon Summary

Ivesia kingii var. kingii, commonly known as alkali ivesia, is a perennial herb in the Rosaceae that is found in California and elsewhere. It occurs within Great Basin scrub, Meadows and seeps, and Playas, growing at elevations from 1200 to 2130 meters. Ivesia kingii var. kingii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Ivesia kingii Wats. var. kingii
Common Name:	alkali ivesia
Family:	Rosaceae
Element Code:	PDROS0X092
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Aug	May-Aug
Elevation:	1200-2130 (3935-6990)
General Habitats:	Great Basin scrub, Meadows and seeps, Playas
Microhabitat:	Alkaline, Clay, Mesic
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G4T3Q
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	SB_SBBG
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12 changed from 1B.2 to 2.2 on 2008-12-09

Occurrence Data from the CNDDB


Total Occurrences:	15
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	2
Fair (C)	2
Poor (D)	1
None (X)	0
Unknown (U)	10

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)
Quads: Name (Quad Code)
Benton Hot Springs (3711875), Chidago Canyon (3711854), Fish Slough (3711844), Laws (3711843), River Spring (3711885), Watterson Canyon (3711866), Whitmore Hot Springs (3711867)

Threat List Data from the CNDDB


Threat List Total:	7
EOs with Threat Listed:	Total EOs	% of EOs
	9	60 %
Grazing	8	53%
ORV activity	3	20%
Recreational use (non-ORV)	1	6%
Road/trail construction/maint.	1	6%
Groundwater pumping	1	6%
Non-native plant impacts	1	6%
Development	1	6%

Notes



Threatened by vehicles, and possibly by grazing.
Threats:

Taxonomy:

Selected References

CRPR List Change on 2008-12-09

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 November 2025].