Taxon Report
Monardella viminea Greenewillowy monardella |
 © 2015 Keir Morse |
Taxon Summary
Monardella viminea, commonly known as willowy monardella, is a perennial herb in the Lamiaceae that is found only in California. It occurs within Chaparral, Coastal scrub, Riparian forest, Riparian scrub, and Riparian woodland, growing at elevations from 50 to 225 meters. Monardella viminea is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Monardella viminea Greene |
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Common Name: |
willowy monardella |
| Family: | Lamiaceae |
| Element Code: | PDLAM18140 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jun-Aug | Jun-Aug |
| Elevation: | 50-225 (165-740) |
| General Habitats: | Chaparral, Coastal scrub, Riparian forest, Riparian scrub, Riparian woodland |
| Microhabitat: | Alluvial Terraces, Washes |
| Microhabitat Details: | alluvial ephemeral washes |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 30 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 5 |
| Fair (C) | 4 |
| Poor (D) | 3 |
| None (X) | 7 |
| Unknown (U) | 10 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Del Mar (3211782), La Jolla (3211772), La Mesa (3211771), National City (3211761), Point Loma (3211762)*, Poway (3211781), San Vicente Reservoir (3211688) | |
Threat List Data from the CNDDB
| Threat List Total: | 15 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 18 | 60 % | |
| Erosion/runoff | 9 | 30% |
| Altered flood/tidal/hydrologic regime | 8 | 26% |
| Development | 8 | 26% |
| Non-native plant impacts | 7 | 23% |
| Road/trail construction/maint. | 6 | 20% |
| Vandalism/dumping/litter | 6 | 20% |
| Other | 5 | 16% |
| ORV activity | 4 | 13% |
| Foot traffic/trampling | 4 | 13% |
| Recreational use (non-ORV) | 3 | 10% |
| Wood cutting or brush clearing | 3 | 10% |
| Mining | 3 | 10% |
| Improper burning regime | 2 | 6% |
| Grazing | 1 | 3% |
| Channelization | 1 | 3% |
Notes
| See Pittonia 5:85 (1902) for original description and Novon 13:425-432 (2003) for revised nomenclature. |
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Threats: |
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Historical occurrences in Switzer and Beeler canyons extirpated by urbanization. Seriously threatened by urbanization, hydrological alterations, road improvements, vehicles, and non-native plants. Possibly threatened by erosion and alteration of fire regimes. |
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Taxonomy: |
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A synonym of M. linoides ssp. viminea in The Jepson Manual. Can be confused with M. stoneana. |
Selected References
| CRPR List Addition on 2004-06-09 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 28 November 2025].