Taxon Report

Linanthus bernardinus N.S. Fraga & D.S. Bell

Pioneertown linanthus

Print Report

Taxon Summary

Linanthus bernardinus, commonly known as Pioneertown linanthus, is a annual herb in the Polemoniaceae that is found only in California. It occurs within Joshua tree "woodland", and Pinyon and juniper woodland, growing at elevations from 1190 to 1340 meters. Linanthus bernardinus is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Linanthus bernardinus N.S. Fraga & D.S. Bell
Common Name:	Pioneertown linanthus
Family:	Polemoniaceae
Element Code:	PDPLM09190
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Mar-May	Mar-May
Elevation:	1190-1340 (3905-4395)
General Habitats:	Joshua tree "woodland", Pinyon and juniper woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G1
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:	added to 1B.2 on 2013-09-13

Occurrence Data from the CNDDB


Total Occurrences:	10
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	1
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	9

Location


California Endemic: True
California Counties and Islands: Name (Code)
San Bernardino (SBD)
Quads: Name (Quad Code)
Rimrock (3411625), Yucca Valley North (3411624)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	10	100 %
Non-native plant impacts	10	100%
Development	3	30%
Foot traffic/trampling	3	30%

Notes



Known only from the Sawtooth Range. Threatened by non-native plants. Potentially threatened by wind and solar energy development. Possibly threatened by development and foot traffic. Similar to L. killipii and L. orcuttii. Not in TJM 2. See Aliso 30(2):97-102 (2012) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2013-09-13

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 November 2025].