Species Details

Quercus dumosa

Nuttall's scrub oak

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Lifeform: perennial evergreen shrub
Blooming Period: Feb-Apr(May-Aug)
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Elevation:
15 - 400 meters
50 - 1310 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Coastal scrub
Microhabitat Details:
Microhabitat:
  • Clay
  • Loam
  • Sandy
Notes:
Threatened by development, fire suppression, and vegetation/fuels management. Possibly threatened by hybridization with Q. berberidifolia. Widespread scrub oak from much of cismontane CA, previously called Q. dumosa, is now Q. berberidifolia.
Threats:
Taxonomy:
Threat List Total: 12
Total EOs % of EOs
EOs with Threat Listed: 51 28 %
THREAT LIST:
Development 33 18%
Road/trail construction/maint. 8 4%
Wood cutting or brush clearing 6 3%
Other 6 3%
Non-native plant impacts 5 2%
Total Occurrences: 180
Element Occurrence Ranks:
A B C D X U
11 14 14 3 3 135
Occurrence Status:
Historical >20 Years 62
Recent <=20 Years 118
Presence:
Presumed Extant 177
Possibly Extirpated 1
Presumed Extirpated 2
California Endemic:
California Island:
States: Name (Code)
Baja California (BA), California (CA)
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), San Diego (SDG), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Alpine (3211677), Beverly Hills (3411814), Carpinteria (3411945), Dana Point (3311746), Del Mar (3211782), Dulzura (3211667), El Cajon (3211678), Encinitas (3311713), Escondido (3311711), Hollywood (3411813), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772), La Mesa (3211771), Laguna Beach (3311757), Las Pulgas Canyon (3311734), Margarita Peak (3311744), National City (3211761), Newbury Park (3411828), Oceanside (3311724), Otay Mesa (3211658), Otay Mountain (3211657), Point Dume (3411817), Point Loma (3211762), Poway (3211781), Rancho Santa Fe (3311712), San Juan Capistrano (3311756), San Luis Rey (3311723), San Marcos (3311722), Santa Barbara (3411946), Triunfo Pass (3411818), Viejas Mountain (3211676), White Ledge Peak (3411944)
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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