Taxon Report
Acanthomintha ilicifolia (Gray) GraySan Diego thorn-mint |
 © 2013 Keir Morse |
Classification
|
Scientific Name: |
Acanthomintha ilicifolia (Gray) Gray |
|
Common Name: |
San Diego thorn-mint |
| Family: | Lamiaceae |
| Element Code: | PDLAM01010 |
| USDA Plants Symbol: | ACIL |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 10-960 (35-3150) |
| General Habitats: | Chaparral, Coastal scrub, Valley and foothill grassland, Vernal pools |
| Microhabitat: | Clay, Openings |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | CE |
| Fed List: | FT |
| Other Status: | SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 85 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 24 |
| Fair (C) | 11 |
| Poor (D) | 7 |
| None (X) | 26 |
| Unknown (U) | 12 |
| California Endemic: False | |
| 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) | |
Threat List Data from the CNDDB
| Threat List Total: | 20 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 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% |
| Improper burning regime | 26 | 30% |
| Other | 23 | 27% |
| Erosion/runoff | 21 | 24% |
| Vandalism/dumping/litter | 16 | 18% |
| ORV activity | 15 | 17% |
| Grazing | 11 | 12% |
| Wood cutting or brush clearing | 5 | 5% |
| Altered flood/tidal/hydrologic regime | 4 | 4% |
| Agriculture | 3 | 3% |
| Surface water diversion | 1 | 1% |
| Biocides | 1 | 1% |
| Feral pigs | 1 | 1% |
| Military operations | 1 | 1% |
| Mining | 1 | 1% |
| Non-native animal impacts | 1 | 1% |
Notes
| 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. |
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Threats: |
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Taxonomy: |
Selected References
| USFWS Critical Habitat (2008) On BIOS viewer |
| USFWS Critical Habitat Shapefile (2008) |
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 January 2025].