Taxon Report

Monardella antonina Hardham ssp. antonina

San Antonio Hills monardella

Print Report

Taxon Summary

Monardella antonina ssp. antonina, commonly known as San Antonio Hills monardella, is a perennial rhizomatous herb in the Lamiaceae that is found only in California. It occurs within Chaparral, and Cismontane woodland, growing at elevations from 320 to 1000 meters. Monardella antonina ssp. antonina is ranked 3, Plants About Which We Need More Information, A Review List.

Classification


Scientific Name:	Monardella antonina Hardham ssp. antonina
Common Name:	San Antonio Hills monardella
Family:	Lamiaceae
Element Code:	PDLAM18011
USDA Plants Symbol:	MOANA
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	320-1000 (1050-3280)
General Habitats:	Chaparral, Cismontane woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	3
Global Rank:	G4T1T3Q
State Rank:	S1S3
State List:	None
Fed List:	None
Other Status:
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)
Fresno (FRE), Monterey (MNT)
Quads: Name (Quad Code)
Cone Peak (3612114), Jolon (3512182), Sherman Peak (3612025), Smith Mountain (3612015)

Threat List Data from the CNDDB


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

Notes



Move to List 4? Possibly threatened by road maintenance, pipeline construction, and feral pigs. Easily confused with M. villosa ssp. villosa, which may be the taxon occurring in ALA, CCA, SBT, and SCL counties; needs clarification.
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 8 November 2025].