Taxon Report

Streptanthus tortuosus Kellogg ssp. truei Al-Shehbaz

True's mountain jewelflower

Print Report

Taxon Summary

Streptanthus tortuosus ssp. truei, commonly known as True's mountain jewelflower, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Lower montane coniferous forest, growing at elevations from 765 to 860 meters. Streptanthus tortuosus ssp. truei is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification


Scientific Name:	Streptanthus tortuosus Kellogg ssp. truei Al-Shehbaz
Common Name:	True's mountain jewelflower
Family:	Brassicaceae
Element Code:	PDBRA2G108
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Jul(Sep)	Jun-Jul(Sep)
Elevation:	765-860 (2510-2820)
General Habitats:	Lower montane coniferous forest
Microhabitat:	Rocky, Slopes
Microhabitat Details:	Partial shade on steep rocky slopes

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G5T1T2
State Rank:	S1S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	added to 1B.1 on 2016-07-20

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	2
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	2

Location


California Endemic: True
California Counties and Islands: Name (Code)
Nevada (NEV), Sierra (SIE)
Quads: Name (Quad Code)
Pike (3912048), Washington (3912037)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	2	50 %
Road/trail construction/maint.	2	50%

Notes



See Harvard Papers in Botany 18(1):13-15 (2013) for original description.
Threats:

Taxonomy:

Selected References

CRPR List Addition on 2016-07-20

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 December 2025].