Species Details

Ambrosia chenopodiifolia

San Diego bur-sage

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Photo of Ambrosia chenopodiifolia
© 2020 Keir Morse
Photo of Ambrosia chenopodiifolia
© 2020 Keir Morse
Photo of Ambrosia chenopodiifolia
© 2010 Anna Bennett
Scientific Name:
Ambrosia chenopodiifolia (Benth.) Payne
Common Name:
San Diego bur-sage
Family: Asteraceae
Element Code: PDAST0C080
USDA Plants Symbol: AMCH5
Synonyms/Other Names:
CA Rare Plant Rank: 2B.1
Fed List: None
State List: None
Global Rank: G2G3
State Rank:
S1
Other Status: SB_CalBG/RSABG; SB_CRES
CRPR Changes:
changed from 2.1 to 2B.1 on 2013-06-12
Add Date: 1974-01-01
Date Edited: 2022-02-01
Lifeform: perennial shrub
Blooming Period: Apr-Jun
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Elevation:
55 - 155 meters
180 - 510 feet
General Habitats:
  • Coastal scrub
Microhabitat Details:
Microhabitat:
Notes:
Known in CA from fewer than 15 occurrences. Threatened by development.
Threats:
Taxonomy:
Threat List Total: 10
Total EOs % of EOs
EOs with Threat Listed: 15 71 %
THREAT LIST:
Development 11 52%
ORV activity 6 28%
Vandalism/dumping/litter 3 14%
Road/trail construction/maint. 2 9%
Non-native plant impacts 2 9%
Total Occurrences: 21
Element Occurrence Ranks:
A B C D X U
0 3 2 0 2 14
Occurrence Status:
Historical >20 Years 10
Recent <=20 Years 11
Presence:
Presumed Extant 19
Possibly Extirpated 1
Presumed Extirpated 1
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)
Imperial Beach (3211751), National City (3211761), Otay Mesa (3211658)
Notes:
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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