Taxon Report

Quercus engelmannii Greene

Engelmann oak

Print Report

Classification


Scientific Name:	Quercus engelmannii Greene
Common Name:	Engelmann oak
Family:	Fagaceae
Element Code:	PDFAG050K0
USDA Plants Symbol:	QUEN
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial deciduous tree
Blooming Period: Mar-Jun	Mar-Jun
Elevation:	50-1300 (165-4265)
General Habitats:	Chaparral, Cismontane woodland, Riparian woodland, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	IUCN_EN; SB_CRES
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	0
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: False
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Bernardino (SBD), San Diego (SDG)
Quads: Name (Quad Code)
Alberhill (3311764), Alpine (3211677), Azusa (3411728), Bachelor Mtn. (3311751), Barrett Lake (3211666), Beaumont (3311688), Blackburn Canyon (3311667), Bonsall (3311732), Boucher Hill (3311638), Cuyamaca Peak (3211685), Del Mar (3211782), Descanso (3211675), Dulzura (3211667), Earthquake Valley (3311614), El Cajon (3211678), El Cajon Mtn. (3211687), El Casco (3311781), Encinitas (3311713), Escondido (3311711), Fallbrook (3311743), Hemet (3311668), Hot Springs Mtn. (3311635), Jamul Mountains (3211668), Julian (3311615), La Habra (3311788), Lake Mathews (3311774), Las Pulgas Canyon (3311734), Live Oak Springs (3211663), Margarita Peak (3311744), Mesa Grande (3311627), Morena Reservoir (3211665), Morro Hill (3311733), Mount Laguna (3211674), Mt. Wilson (3411821), Murrieta (3311752), Otay Mesa (3211658), Otay Mountain (3211657), Pala (3311731), Palomar Observatory (3311637), Pasadena (3411822), Pechanga (3311741), Poway (3211781), Ramona (3311617), Ranchita (3311625), Rancho Santa Fe (3311712), Rodriquez Mtn. (3311628), San Dimas (3411717), San Jacinto (3311678), San Marcos (3311722), San Pasqual (3311618), San Vicente Reservoir (3211688), Santa Ysabel (3311616), Sitton Peak (3311754), Temecula (3311742), Tule Springs (3211686), Vail Lake (3311648), Valley Center (3311721), Viejas Mountain (3211676), Warner Springs (3311636), Warners Ranch (3311626), Waterman Mtn. (3411738), Wildomar (3311753), Winchester (3311761), Yorba Linda (3311787)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

Notes



Only one tree remaining on SCT Isl. Threatened by development and grazing. Protected in part at the Santa Rosa Plateau Preserve (TNC), RIV Co. See Fremontia 18(3):26-35 (1990) for species account and ecological discussion.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 4 January 2025].