Leaves are evergreen, leathery, mostly flat, with either entire or spiny toothed margins and pointed leaf tips.  Upper leaf surfaces are shiny dark green with shiny yellowish green undersides. LA Arboretum, Los Angeles County, CA. 7-05-09. © Joan Avise

Interior Live Oak

Quercus wislizenii

Native to California. Grows on dry slopes at higher elevations in the Santa Ana Mountains.  Mature trees range from 30-75 ft., and the state record holder in Stockton is 90'.   These trees can live over 200 years.  They are resistant to fire due to thick bark, and sprouting ability. They hybridize with Coast Live Oak and other oaks. 

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Los Alamos Cyn, S. Main Div. to 2.25 mi E. 4-10-14. © Ron Vanderhoff.
Los Alamos Cyn, S. Main Div. to 2.25 mi E. 4-10-14. © Ron Vanderhoff.

Lion Cyn. and Chiquita Trail, N of Hwy. 74, 4-13-14. © Ron Vanderhoff.
New growth, Los Pinos Trail, Upper Trabuco, etc. 4-30-15. © Ron Vanderhoff.

Var. frutescens, staminate. Trabuco & W Horsethief Trls., N Main Div. Rd., 3-31-16. © Ron Vanderhoff.

LA Arboretum, Los Angeles County, CA. 7-05-09. © Joan Avise
Lion Cyn. and Chiquita Trail, N of Hwy. 74, 4-13-14. © Ron Vanderhoff.
 
Los Pinos Trail, Upper Trabuco, etc. 4-30-15. © Ron Vanderhoff.