Taxon Report

Linanthus orcuttii (Parry & Gray) Jeps.

Orcutt's linanthus

Print Report

Taxon Summary

Linanthus orcuttii, commonly known as Orcutt's linanthus, is a annual herb in the Polemoniaceae that is found in California and elsewhere. It occurs within Chaparral, Lower montane coniferous forest, and Pinyon and juniper woodland, growing at elevations from 915 to 2145 meters. Linanthus orcuttii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Linanthus orcuttii (Parry & Gray) Jeps.
Common Name:	Orcutt's linanthus
Family:	Polemoniaceae
Element Code:	PDPLM090X0
USDA Plants Symbol:	LIOR
Synonyms/Other Names:	Linanthus orcuttii ssp. pacificus

Ecology and Life History


Lifeform:	annual herb
Blooming Period: May-Jun	May-Jun
Elevation:	915-2145 (3000-7040)
General Habitats:	Chaparral, Lower montane coniferous forest, Pinyon and juniper woodland
Microhabitat:	Openings
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G3
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	33
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	1
Fair (C)	2
Poor (D)	0
None (X)	0
Unknown (U)	27

Location


California Endemic: False
California Counties and Islands: Name (Code)
Riverside (RIV), San Diego (SDG)
Quads: Name (Quad Code)
Aguanga (3311647), Beauty Mountain (3311646), Boucher Hill (3311638), Cuyamaca Peak (3211685), Descanso (3211675), Hot Springs Mtn. (3311635), Monument Peak (3211684), Mount Laguna (3211674), Palomar Observatory (3311637), Vail Lake (3311648), Warner Springs (3311636)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	9	27 %
Recreational use (non-ORV)	7	21%
Road/trail construction/maint.	3	9%
Logging	3	9%
Grazing	2	6%
Erosion/runoff	1	3%
Foot traffic/trampling	1	3%

Notes



Threatened by foot traffic and recreational activities. See Madroño 24(3):150-151 (1977) for taxonomic treatment and 43(4):528 (1996) for first SBD Co. records.
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 31 January 2025].