(225) 



it differs in the larger, more lanceolate, more acute and lighter 

 green leaves and the form of the cup-scales ; in .£>. Tourney i 

 these are ovate-deltoid, obtuse, not rounded. 4L- Emoryi is 

 the most common live-oak of the region, growing principally 

 in the mountain regions. J^. hastata Liebm. was described 

 from a specimen with subentire leaves, cordate at the base. 

 Seep/, j 2./. 5. 



Texas : Ft. Davis, Blake, 5; gravelly hills on the Limpia, 

 Bigelozo(NLex. Bound. Surv.) ; western Texas, 1849, Wright, 

 666. 



New Mexico : Bear Mountains, 1881, //. H. Busby, 387 ; 

 Sierra del Pajarito, Schott; 185 1-2, C. Wright, 1865 (j£. 

 hastata Liebm.) ; Pigeon Creek, 1846, W. H. Emory (type). 



Arizona : Santa Catalina Mountains, 1894, J. W. Tourney ; 

 1881, Pringle; Santa Rita Mountains, 1884, C. S. Pringle; 

 Huachuca Mountains, 1895, Tourney; Ft. Huachuca, 1891, 

 T. E. Wilcox; Santa Rita Mountains, 1894, Tourney ; 1869, 

 E. Palmer; Central Arizona, 1874, Bothrock, 28 J. 



Mexico: Sonora, Cafit. E. K. Smith; southwest Chihua- 

 hua, 1885, E. Palmer, 302. 



Illustrations : PL 32. J. 4, 3 ; Emory's Rep. fl. 9; Oer- 

 sted, Liebm. Chenes Am. Trop. pi. 46. f. j, 4. 



25. Quercus Toumeyi Sargent, Gard. & Forest, 8: 92. 



A tree 7-10 m. high. Bark of the trunk dark brown, fur- 

 rowed, scaly, that of the older branches almost black, of the 

 young shoots red, tomentose and with dark hairs : petioles 

 2-3 mm. long : leaf-blades oblong, ovate-oblong or oval, 

 rounded or cordate at the base, acute at the apex, remotely 

 sinuately dentate with mucronate or slightly spinulose-tipped 

 teeth, glabrous and shining, pale bluish green above, puberu- 

 lent or in age glabrate beneath, 2-3 cm. long : fruit sessile : 

 cup shallow, covering about one-fourth of the acorn, which 

 is ellipsoid or ovoid, 12-16 mm. long and light brown. 



This species is, as far as the leaves are concerned, nearest 

 to the Californian J£. dumosa but is easily distinguished by 

 the small acorn. I have seen only one specimen. 



Arizona: Bisbee, 1895,/. W. Tourney. 



