UC Integrated Hardwood Range Management Program

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Interior
Live Oak Characteristics




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Line Drawing of Foliage and Acorn-Interior Live Oak
Interior Live Oak
Acorn and Foliage of Interior Live Oak

Scientific name
Quercus wislizeni A. DC.


Common names
Interior live oak, highland live oak, Sierra live oak


Height
Usually 30-75 ft.; shrub form 8-10 ft.


Mature Tree DBH (Diam. at Breast Ht.)
1 to 3 feet


Longevity
150 to 200 yrs.


Sprouting
Very vigorous sprouter


Acorn
Matures second year; very slender, pointed, 1 in. long; cup over half the nut

Acorn of Interior Live Oak Acorn of Interior Live Oak


Foliage
Evergreen with smooth to very spiny-toothed; dark green above and lighterbelow with waxy/shiny surface; 1-4 in.; flat

Foliage of Interior Live Oak Foliage of Interior Live Oak


Shade Tolerance
Somewhat shade tolerant


Fire Tolerance
Not very tolerant, but sprouts well after fire


Elevation
Below 2000 ftet in north and above 6200 feet in south


Associates
In pure stands or mixed with blue and/or coast live oak, and valley oaksin So. California


Sites
Wide range, from valleys to foothills; moister areas than blue oak


Identification Notes
Confused with coast live oaks; distinguished by flat leaves



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