Taxon Report

Trichostema rubisepalum Elmer

Hernandez bluecurls

Print Report

Taxon Summary

Trichostema rubisepalum, commonly known as Hernandez bluecurls, is a annual herb in the Lamiaceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, and Vernal pools, growing at elevations from 300 to 1435 meters. Trichostema rubisepalum is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Trichostema rubisepalum Elmer
Common Name:	Hernandez bluecurls
Family:	Lamiaceae
Element Code:	PDLAM220C0
USDA Plants Symbol:	TRRU
Synonyms/Other Names:

Ecology and Life History


Lifeform:	annual herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	300-1435 (985-4710)
General Habitats:	Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, Vernal pools
Microhabitat:	Gravelly, Serpentine (sometimes), Volcanic (sometimes)
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G4
State Rank:	S4
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
El Dorado (ELD), Fresno (FRE), San Benito (SBT), Tuolumne (TUO)
Quads: Name (Quad Code)
Chinese Camp (3712074), Idria (3612046), Latrobe (3812058), New Melones Dam (3712085), San Benito Mtn. (3612036), Santa Rita Peak (3612035)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes




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 30 October 2025].