Taxon Report

Ipomopsis tenuifolia (Gray) V. Grant

slender-leaved ipomopsis

Print Report

Taxon Summary

Ipomopsis tenuifolia, commonly known as slender-leaved ipomopsis, is a perennial herb in the Polemoniaceae that is found in California and elsewhere. It occurs within Chaparral, Pinyon and juniper woodland, and Sonoran desert scrub, growing at elevations from 100 to 1200 meters. Ipomopsis tenuifolia is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Ipomopsis tenuifolia (Gray) V. Grant
Common Name:	slender-leaved ipomopsis
Family:	Polemoniaceae
Element Code:	PDPLM060J0
USDA Plants Symbol:	IPTE3
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Mar-May	Mar-May
Elevation:	100-1200 (330-3935)
General Habitats:	Chaparral, Pinyon and juniper woodland, Sonoran desert scrub
Microhabitat:	Gravelly (sometimes), Rocky (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G4
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	17
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	3
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	13

Location


California Endemic: False
California Counties and Islands: Name (Code)
Imperial (IMP), San Diego (SDG)
Quads: Name (Quad Code)
In-ko-pah Gorge (3211661), Jacumba (3211662)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	5	29 %
Non-native plant impacts	3	17%
ORV activity	3	17%
Vandalism/dumping/litter	2	11%
Foot traffic/trampling	2	11%

Notes



See Proc. Amer. Acad. 11: 86 (1876) for original description and El Aliso 3(3): 357 (1956) for revised nomenclature.
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 5 December 2025].