Species Details

Ambrosia monogyra

singlewhorl burrobrush

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Photo by © 2014 Keir Morse  max-height:128px; max-width:145px;
© 2014 Keir Morse
Photo by © 2014 Keir Morse  max-height:128px; max-width:145px;
© 2014 Keir Morse
Photo by © 2014 Keir Morse  max-height:128px; max-width:145px;
© 2014 Keir Morse
Scientific Name:
Ambrosia monogyra Torr. & Gray
Common Name:
singlewhorl burrobrush
Family: Asteraceae
Element Code: PDAST50010
USDA Plants Symbol:
Synonyms/Other Names:
CA Rare Plant Rank: 2B.2
Fed List: None
State List: None
Global Rank: G5
State Rank:
S2
Other Status:
CRPR Changes:
changed from 2.2 to 2B.2 on 2013-06-12
added to 2.2 on 2007-02-21
Add Date: 2007-02-21
Date Edited: 2022-02-01
Lifeform: perennial shrub
Blooming Period: Aug-Nov
Elevation:
10 - 500 meters
35 - 1640 feet
General Habitat:
  • Chaparral
  • Sonoran desert scrub
General Micro Habitat:
Micro Habitat:
  • Sandy
Notes:
Possibly threatened by trail maintenance and non-native plants. See Hymenoclea monogyra in TJM (1993). See Madrono 49: 143 (2002) for taxonomic treatment.
Threats:
Taxonomy:
Other:
Total Occurrences: 30
Element Occurrence Ranks:
A B C D X U
0 2 4 0 0 24
Occurrence Status:
Historical >20 Years 14
Recent <=20 Years 16
Presence:
Presumed Extant 30
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), Nevada (NV), New Mexico (NM), Sonora, Mexico (SO), Texas (TX)
California Counties and Islands: Name (Code)
Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Cuyamaca Peak (3211685), Descanso (3211675), Devore (3411724), Dulzura (3211667), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772), La Mesa (3211771), Mecca (3311651), National City (3211761), Otay Mesa (3211658), Otay Mountain (3211657), Palm Springs (3311675)
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.

Map

Presumed Extant
Counties   Quads