FAGACEAE 



Arizona White Oak 



Quercus arizonica Sarg. 



HABIT. A shrub or small tree rarely 60 feet high and 3 feet 

 in diameter; handsome, round-topped crown with massive, 

 contorted, nearly horizontal branches. 



LEAVES. Persistent until appearance of new leaves; oblong- 

 lanecolate to broadly ovate; 1-4 inches long (most about 2 J/2); 

 entire or with wavy, spiny teeth; revolute margin; dark blue- 

 green above, paler and densely hairy below. 



FRUIT. Maturing in one year; sessile or short-stalked; acorn 

 %-l inch long, chestnut-brown, oblong to obovoid; enclosed 

 for Yi its length in deep cup with thick, corky, woolly, red- 

 tipped scales; inner surface of nut shell glabrous; kernel sweet, 



TWIGS. Stout; red-brown; red and hairy at first, becoming 

 glabrous. Winter buds: He inch long, subglobose, brown, ciliate. 



BARK. Rather thick; ash-gray; furrowed and scaly ridged. 



SILVICAL CHARACTERS. Intolerant; on dry mountain 

 slopes; the most common live oak in the Southwest. 



* * * 



Emory Oak 



Quercus emoryi Torr. 



HABIT. A shrub or small tree rarely 60 feet high and 2-5 

 feet in diameter; round-topped, even crown with stout, droop- 

 ing branches. 



LEAVES. Persistent until appearance of new leaves; oblong- 

 lanceolate; l-2Vi inches long; entire or remotely wavy toothed; 

 leathery; dark green above, paler below; glabrous or slightly 

 hairy. 



FRUIT. Maturing in one year; sessile or nearly so; acorn 

 J/^-H inch long, nearly black, oblong to ovoid; enclosed for 

 V'i-Vl its length in bowl-shaped cup with brown, hairy scales; 

 inner surface of nut shell woolly; kernel sweet. 



TWIGS. Slender; red and hairy at first, becoming dark brown 

 and glabrous. 



BARK. Thick; nearly black; deeply furrowed and scaly plated. 



SILVICAL CHARACTERS. Intolerant; on dry foothills 

 and mountains; very abundant; in pure or mixed stands; coppices 

 freely; acorns important source of human and animal food. 



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