Taxon Report

Monardella robisonii Epl.

Robison's monardella

Print Report

Taxon Summary

Monardella robisonii, commonly known as Robison's monardella, is a perennial rhizomatous herb in the Lamiaceae that is found only in California. It occurs within Pinyon and juniper woodland, growing at elevations from 610 to 1500 meters. Monardella robisonii is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Monardella robisonii Epl.
Common Name:	Robison's monardella
Family:	Lamiaceae
Element Code:	PDLAM180K0
USDA Plants Symbol:	MORO
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: (Feb)Apr-Sep(Oct)	(Feb)Apr-Sep(Oct)
Elevation:	610-1500 (2000-4920)
General Habitats:	Pinyon and juniper woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	37
Element Occurrence Ranks:
Excellent (A)	6
Good (B)	11
Fair (C)	5
Poor (D)	2
None (X)	0
Unknown (U)	13

Location


California Endemic: True
California Counties and Islands: Name (Code)
Riverside (RIV), San Bernardino (SBD)
Quads: Name (Quad Code)
Cadiz Valley SW (3411514), Dale Lake (3411526), Indian Cove (3411612), Joshua Tree South (3411613), Keys View (3311682), Malapai Hill (3311681), Morongo Valley (3411615), Queen Mtn. (3411611), Yucca Valley North (3411624)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	20	54 %
Recreational use (non-ORV)	17	45%
Development	4	10%
Foot traffic/trampling	3	8%
Non-native plant impacts	1	2%
ORV activity	1	2%
Road/trail construction/maint.	1	2%

Notes



Potentially threatened by recreational activities. May occur in BA; need confirmation. Closely related to and possibly a variety of M. linoides.
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 26 October 2025].