Taxon Report

Monardella stebbinsii Hardham & Bartel

Stebbins' monardella

Print Report


© 2011 George W. Hartwell

Taxon Summary

Monardella stebbinsii, commonly known as Stebbins' monardella, is a perennial rhizomatous herb in the Lamiaceae that is found only in California. It occurs within Broadleafed upland forest, Chaparral, and Lower montane coniferous forest, growing at elevations from 780 to 1100 meters. Monardella stebbinsii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification
Scientific Name:
 Monardella stebbinsii Hardham & Bartel
Common Name:
 Stebbins' monardella
Family: Lamiaceae
Element Code: PDLAM180L0
USDA Plants Symbol: MOST3
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial rhizomatous herb
Blooming Period: Jul-Sep Jul-Sep
Elevation: 780-1100 (2560-3610)
General Habitats: Broadleafed upland forest, Chaparral, Lower montane coniferous forest
Microhabitat: Rocky, Serpentine
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2
State Rank:
 S2
State List: None
Fed List: None
Other Status: SB_UCSC; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 11
Element Occurrence Ranks:
   Excellent (A) 0
   Good (B) 6
   Fair (C) 0
   Poor (D) 0
   None (X) 0
   Unknown (U) 5

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Plumas (PLU)
Quads: Name (Quad Code)
Caribou (4012112)

Threat List Data from the CNDDB

Threat List Total: 5
EOs with Threat Listed: Total EOs % of EOs
4 36 %
Road/trail construction/maint. 3 27%
Erosion/runoff 2 18%
Logging 2 18%
Mining 2 18%
Development 1 9%

Notes
Known only from along the North Fork of the Feather River. Possibly threatened by mining and road maintenance. See Aliso 12(4):693-699 (1990) 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 24 October 2025].