3. Southwestern Live Oaks (West Texas to Arizona, south into 

 Mexico). 



9. Acorn shell glabrous on inside, light brown on outside, nut 

 maturing in 1 year. 

 10. Fruit in long-stalked clusters of 2 or more ; leaves broadly 



obovate, yellow hairy below 



Q. reticulata H. & B., Netleaf Oak 



10. Fruit sessile or nearly so, single or paired; leaves oblong 

 to ovate. 



11. Leaves glabrous below, 1-2 inches long; acorn 

 enclosed about V'i length in cup slightly fringed at 

 rim Q. oblongifolia, Mexican Blue Oak, p. 207. 



1 1 . Leaves hairy below ; acorn enclosed about Vi its 

 length in unfringed cup. 



12. Leaves V^-1 inch long; acorn Vi^Vz inch long; 

 Arizona Q. toumeyi Sarg., Tourney Oak 



12. Leaves \—^ inches long; acorn H-1 inch long; 



Arizona and New Mexico 



Q. arizonica, Arizona White Oak, p. 209. 



9. Acorn shell woolly on inner surface. 



13. Acorn maturing in 1 year, dark brown to nearly black; 



leaves nearly glabrous below 



Q. emoryi, Emory Oak, p. 209. 



13. Acorn maturing in 2 years, light brown; leaves woolly 

 below. 



14. Leaves lanceolate to elliptic, persistent until second 

 spring Q. hypoleucoides, Silverleaf Oak, p. 213. 



14. Leaves oblong-ovate to elliptic, persistent 3-4 years 

 Q. chrysolepis, Canyon Live Oak, p. 213 



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