Species Details

Acanthomintha ilicifolia

San Diego thorn-mint

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Photo of Acanthomintha ilicifolia
© 2013 Keir Morse
Photo of Acanthomintha ilicifolia
© 2013 Keir Morse
Photo of Acanthomintha ilicifolia
© 2016 Vince Scheidt
Scientific Name:
Acanthomintha ilicifolia (Gray) Gray
Common Name:
San Diego thorn-mint
Family: Lamiaceae
Element Code: PDLAM01010
USDA Plants Symbol: ACIL
Synonyms/Other Names:
CA Rare Plant Rank: 1B.1
Fed List: FT (1998-11-12)
State List: CE (1982-01-01)
Global Rank: G1
State Rank:
Other Status: SB_CalBG/RSABG; SB_CRES
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2023-06-06
Lifeform: annual herb
Blooming Period: Apr-Jun
10 - 960 meters
35 - 3150 feet
General Habitats:
  • Chaparral
  • Coastal scrub
  • Valley and foothill grassland
  • Vernal pools
Microhabitat Details:
  • Clay
  • Openings
Approximately one third of the historical occurrences in CA have been extirpated; threatened by urbanization, road construction, vehicles, grazing, trampling, foot traffic, recreactional activities, erosion, and non-native plants. Several occurrences introduced (22B, 34C, 35B, 36D), but few have survived. See Proceedings of the American Academy of Arts and Sciences 8:368 (1872) for original description.
Threat List Total: 20
Total EOs % of EOs
EOs with Threat Listed: 78 92 %
Non-native plant impacts 65 76%
Development 53 62%
Foot traffic/trampling 30 35%
Recreational use (non-ORV) 28 32%
Road/trail construction/maint. 28 32%
Total Occurrences: 85
Element Occurrence Ranks:
5 24 11 7 26 12
Occurrence Status:
Historical >20 Years 42
Recent <=20 Years 43
Presumed Extant 59
Possibly Extirpated 19
Presumed Extirpated 7
California Endemic:
California Island:
States: Name (Code)
Baja California (BA), California (CA)
California Counties and Islands: Name (Code)
San Diego (SDG)
Quads: Name (Quad Code)
Alpine (3211677), Del Mar (3211782), Dulzura (3211667), El Cajon (3211678), El Cajon Mtn. (3211687), Encinitas (3311713), Escondido (3311711), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772)*, La Mesa (3211771), National City (3211761)*, Otay Mesa (3211658), Poway (3211781), Ramona (3311617), Rancho Santa Fe (3311712), San Luis Rey (3311723), San Marcos (3311722), San Pasqual (3311618), San Vicente Reservoir (3211688), Tecate (3211656), Viejas Mountain (3211676)
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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