Taxon Report
Ambrosia chenopodiifolia (Benth.) PayneSan Diego bur-sage |
 © 2020 Keir Morse |
Classification
|
Scientific Name: |
Ambrosia chenopodiifolia (Benth.) Payne |
|
Common Name: |
San Diego bur-sage |
| Family: | Asteraceae |
| Element Code: | PDAST0C080 |
| USDA Plants Symbol: | AMCH5 |
|
Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial shrub |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 55-155 (180-510) |
| General Habitats: | Coastal scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.1 |
| Global Rank: | G2G3 |
|
State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_CRES |
|
CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 21 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 3 |
| Fair (C) | 2 |
| Poor (D) | 0 |
| None (X) | 2 |
| Unknown (U) | 14 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Imperial Beach (3211751), National City (3211761), Otay Mesa (3211658) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 15 | 71 % | |
| Development | 11 | 52% |
| ORV activity | 6 | 28% |
| Vandalism/dumping/litter | 3 | 14% |
| Road/trail construction/maint. | 2 | 9% |
| Non-native plant impacts | 2 | 9% |
| Foot traffic/trampling | 2 | 9% |
| Grazing | 1 | 4% |
| Mining | 1 | 4% |
| Agriculture | 1 | 4% |
| Recreational use (non-ORV) | 1 | 4% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 9 January 2025].