814 Yearbook^ of Agriculture 1949 



regions and adjacent Mexico. Bark gray brown, scaly and flaky. Leaves evergreen, 

 elliptical or oval, 1 to 3 inches long, with edges spiny-toothed or smooth, thick and 

 leathery, bright green and smooth above, yellow-hairy or whitish beneath. Acorns 1 to 2 

 inches long, broad, with thick yellowish cup. 



Principal uses: Parts of vehicles and agricultural implements. Ornamental. Fuel. 



162. BLUE OAK, Quercus douglasii Hook. & Arn. (California blue oak, mountain white 

 oak). 



Medium-sized tree of California. Bark gray, scaly. Leaves shedding in fall, oblong, 1 to 

 3 inches long, short-pointed or rounded at apex, with edges coarsely toothed, shallowly 

 4- or 5-lobed, or smooth, rigid, pale blue green above, pale and slightly hairy beneath. 

 Acorns ^4 to 1 l /z inches long, broad, with shallow cup. 



Principal use?: Fuel. 



cc. Leaves deeply lobed halfway or more to middle. 



163. OREGON WHITE OAK, Quercus garryana Dougl. (Garry oak, Oregon oak). 

 Medium-sized to large tree of Pacific coast region from California to British Columbia. 



Bark light gray or brown, thin, with narrow fissures, broken into scaly ridges. Leaves 

 shedding in fall, oblong, 3 to 6 inches long, deeply 5- to 9-lobed halfway or more to 

 middle with blunt-pointed or slightly toothed lobes, dark green above, light green and 

 usually hairy beneath. Acorns 1 to 1 J4 inches long, broad and rounded, with shallow cup. 

 Principal uses: Furniture, shipbuilding, construction, agricultural implements, coop- 

 erage, cabinet work, interior finish, and fuel. Shade tree. 



164. CALIFORNIA WHITE OAK, Quercus lobata Nee (valley white oak, white oak, valley 

 oak). 



Large tree of California. Bark gray or brown, thick, deeply furrowed and broken hori- 

 zontally into thick plates. Leaves shedding in fall, oblong, 2/2 to 4 inches long, broad, 

 deeply 7- to 11-lobed more than halfway to middle, dark green above, gray-hairy beneath. 

 Acorns long, 1*4 to 2 l /4 inches long, slender and pointed, with deep cup. 



Principal uses: Shade tree. Fuel. 



165. GAMBEL OAK, Quercus gambelii Nutt. (Rocky Mountain white oak, Utah white 

 oak; Q. utahensis (A. DC.) Rydb.). 



Small tree or shrub of Rocky Mountain region, including adjacent Mexico. Bark gray 

 brown, scaly. Leaves shedding in fall, oblong, 4 to 8 inches long, deeply 7- to 11-lobed 

 halfway or more to middle, dark green above, light green and soft-hairy beneath. Acorns 

 % to % mcn l n S broad and rounded, with deep cup. 



Principal uses : Fence posts and fuel. 



ELBERT L. LITTLE, JR., dendrologist in the Division of Dendrology and Range 

 Forage Investigations, Forest Service, in Washington, D. C., has been in research 

 work with the Forest Service since 1934. He has published papers on names of 

 trees of the United States and various botanical subjects. During the Second 

 World War he made forestry and botanical surveys in Latin American countries. 

 Dr. Little holds degrees from the Universities of Oklahoma and Chicago. 



