(22 9 ) 



Qicercus Mexicana y confertifolia Wenzig, Jahrb. Bot. Gart. 

 Berlin, 3: 209. 1883. 



A tree 6-10, seldom 15 m. high, with a trunk 2.5-4 dm. 

 in diameter. Bark of the trunk nearly black and deeply fur- 

 rowed and scaly ; that of the branches dull brown with nu- 

 merous lenticels ; the branchlets more or less densely white 

 stellate-puberulent : leaf-buds densely stellate : petioles 3-10 

 mm. long : leaf-blades lanceolate, acute at the base, long- 

 attenuate at the apex, entire or sinuately dentate with spinu- 

 lose-tipped teeth, 5-10 cm. long, with revolute margins, very 

 thick and firm, pale yellowish green, glabrous or at first 

 slightly puberulent above, densely white-stellate beneath : 

 cup hemispheric or slightly turbinate, 10-13 mm. in di- 

 ameter; scales ovate, brown, rather thin, not corky on the 

 back, stellate-puberulent ; acorn avoid, acutish, 15-18 mm. 

 long, light brown, when young stellate-puberulent. 



Jj>. hypoleuca grows in the mountain regions at an altitude of 

 about 2000 m. on hillsides and in canons scattered among the 

 pines. It is not closely related to any of the other species of 

 the region. 



Arizona: Santa Rita Mountains, 1881, C. G. Pr ingle; 

 Huachuca Mountains, 1895, /. W. Tourney; Ft. Huachuca, 

 1892, Dr. Wilcox; San Francisco Mountains, Capt. E. K. 

 Smith; Huachuca Mountains, 1894, Dr. Wilcox. 



New Mexico : Bear Mountains, 1880, H. H. Rusby, 383; 



Sierra del Pajarito, 1869, Schott; Copper Mines, 1851-2, C. 



Wright, 1869; Pinos Altos Mountains, 1880, E. L. Greene. 



Illustrations: PL 33. f. 5-6; Greene, W. Am. Oaks, 



pi. 6; Sargent, Silva N. Am. pi. 403. 



29. Quercus Texana Buckley, Proc. Phil. Acad, i860: 



444. 



Quercus coccinea var. ? microcarpa Torr. Bot. Mex. 

 Bound. Surv. 206. 1858. Not Q. microcarpa Lapay. 

 Quercus rubra var. Texana Buckley, Proc. Acad. 1881 : 



123. 



A small tree with spreading branches. Bark of the stem 

 light-brown and scaly; that of the branches brown or green- 

 ish and that of the twigs chestnut or reddish, glabrous : bud- 



