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 Quercus michauxii x macrocarpa Sudworth. 



Range. — Southwestern Tennessee (near Covington). 



Quercus breviloba (Torr.) Sargent. Durand Oak. 



Quercus durandii Buckl. 



Range. — Central Alabama (and to Mulberry Fork of Tombigbee River, in Blount 

 County) and Mississippi (near Columbus and near Mhoons Valley) ; Louisiana (Red 

 River near Shreveport); Texas (from near Dallas west to central part of the State 

 and southward on streams flowing into the Gulf to near Monterey). 



Names in use. — White Oak (Tex.): Texas White Oak (Ala.); Shin 

 Oak (Tex.); Pin Oak (Tex.): Bastard Oak (Ala., La., Tex.); Basket 

 Oak (Ala., La., Tex.): Durand's Oak (Ala., La., Tex.). 



Quercus undulata Torr. Rocky Mountain Oak. 



Range. — Colorado to western Texas (mountains) and through New Mexico and 

 Arizona to southern Utah and Xevada ;. northern Mexico. 



Kames in use. — Scrub Oak: Shin Oak. 

 Quercus douglasii Hook. & Am. (California) Rock Oak. 



Range. — California (from Mendocino County and valley of upper Sacramento 

 River southward on westward slopes of Sierra Xevada and valleys of the coast 

 ranges to the Tehachapi Pass and across to the border of the Mohave Desert . 



Names in use. — Mountain White Oak (Cal.); Rock Oak (Oal.); 

 White Oak (Cal.); Blue Oak (Cal.). 



Quercus engelmanni Greene. Engelmann Oak. 



Raxge. — Southwestern California (in a belt 15 miles wide from vicinity of Sierra 

 Madre to the mesa east of San Diego). 



Names in use. — Engelmanivs Oak; Evergreen White Oak. 

 Quercus oblongifolia Torr. Blue Oak. 



Raxge. — Western Texas (Chisos Mountains) through southern Xew Mexico and 

 Arizona, and south into northern Mexico. 



Name ix use. — White Oak. 

 Quercus arizonica Sargent. Arizona White Oak. 



Raxge. — Southern New Mexico and Arizona. 



Name in use. — White Oak. 

 Quercus reticulata Humb. & Bonpl. Netleaf Oak. 



Raxge. — Southern Xew Mexico (Mount Graham, Santa Rita, Huachuca, Chiri- 

 cahua. and Santa Catalina mountains) and Arizona (San Lais and Animas; moan- 

 tains). 



Quercus toumeyi Sargent. Tourney Oak. 



Raxge.— Southeastern Arizona (Mule Mountain, Cochise County) 



Quercus dumosa Xatt. (California) Scrub Oak. 



Range. — California (western slopes of Sierra Xevada; coast ranges south of San 

 Francisco Bay : islands off southern coast and inland to Mohave Desert; San Ber- 

 nardino and San Jacinto mountains) ; Lower California (to near San Telmo). 



Quercus durnosa revoluta Sargeut. Curl-leaf Scrub Oak. 



RANGE. — Xorthern California i^San Francisco Bay to Mendocino County and Xapa 

 Valley). 



