Taxon Report

Quercus dumosa Nutt.

Nuttall's scrub oak

Print Report

Classification


Scientific Name:	Quercus dumosa Nutt.
Common Name:	Nuttall's scrub oak
Family:	Fagaceae
Element Code:	PDFAG050D0
USDA Plants Symbol:	QUDU
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial evergreen shrub
Blooming Period: Feb-Apr(May-Aug)	Feb-Apr(May-Aug)
Elevation:	15-400 (50-1310)
General Habitats:	Chaparral, Closed-cone coniferous forest, Coastal scrub
Microhabitat:	Clay, Loam, Sandy
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	BLM_S; IUCN_EN; SB_CRES; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	180
Element Occurrence Ranks:
Excellent (A)	11
Good (B)	14
Fair (C)	14
Poor (D)	3
None (X)	3
Unknown (U)	135

Location


California Endemic: False
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)

Threat List Data from the CNDDB


Threat List Total:	12
EOs with Threat Listed:	Total EOs	% of EOs
	51	28 %
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%
Recreational use (non-ORV)	4	2%
Improper burning regime	4	2%
Vandalism/dumping/litter	2	1%
ORV activity	2	1%
Foot traffic/trampling	2	1%
Agriculture	1	0%
Altered flood/tidal/hydrologic regime	1	0%

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:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].