Taxon Report

Monardella macrantha Gray ssp. hallii Abrams

Hall's monardella

Print Report

Taxon Summary

Monardella macrantha ssp. hallii, commonly known as Hall's monardella, is a perennial rhizomatous herb in the Lamiaceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, and Valley and foothill grassland, growing at elevations from 730 to 2195 meters. Monardella macrantha ssp. hallii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Monardella macrantha Gray ssp. hallii Abrams
Common Name:	Hall's monardella
Family:	Lamiaceae
Element Code:	PDLAM180E1
USDA Plants Symbol:	MOMAH
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Oct	Jun-Oct
Elevation:	730-2195 (2395-7200)
General Habitats:	Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G5T3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	41
Element Occurrence Ranks:
Excellent (A)	7
Good (B)	7
Fair (C)	3
Poor (D)	0
None (X)	0
Unknown (U)	24

Location


California Endemic: True
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Aguanga (3311647), Alberhill (3311764), Boucher Hill (3311638), Cahuilla Mtn. (3311657), Forest Falls (3411618), Harrison Mtn. (3411722), Mt. Baldy (3411726), Palomar Observatory (3311637), Pechanga (3311741), Santiago Peak (3311765), Sitton Peak (3311754), Vail Lake (3311648), Warner Springs (3311636), Yucaipa (3411711)

Threat List Data from the CNDDB


Threat List Total:	5
EOs with Threat Listed:	Total EOs	% of EOs
	17	41 %
Road/trail construction/maint.	11	26%
Improper burning regime	10	24%
Wood cutting or brush clearing	4	9%
Other	1	2%
Recreational use (non-ORV)	1	2%

Notes



Threatened by road maintenance and recreational activities. Intermediates to ssp. macrantha are common. See Muhlenbergia 8:26-44 (1912) for original description.
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 23 June 2025].