(228) 



A shrub or rarely a small tree, 6-9 m. high. Bark of 

 trunk and branches dark gray or brownish, that of the young 

 branchlets fulvous-tomentulose : bud-scales brown, tomentu- 

 lose : petioles 3-5 mm. long : leaf-blades usually broadly oval, 

 acute at the base, abruptly short-acuminate, thick and firm, 

 1-4 cm. long, when young deciduously fulvous stellate-tomen- 

 tulose especially on the lower surface, in age pale yellowish 

 green, glabrous and shining above, dull white and punctate 

 beneath with many lateral veins and obsolete reticulation, 

 usually entire or with a few spinulose-tipped teeth ; those of the 

 sterile shoots very unlike the usual form, almost orbicular or 

 round-ovate in outline, obtuse or cordate at the base, coarsely 

 and deeply dentate with lanceolate or triangular, divergent 

 spinose-tipped teeth : cup hemispheric, 10-14 mm - i n diam- 

 eter ; scales ovate, fulvous-stellate, only slightly thickened and 

 green on the back, with brown acute tips ; acorn ovoid, about 

 15 mm. long, light brown. 



o^. Wilcoxii is closely allied to £>_. chrysolepis and has 

 been confused with it, but differs in the shorter and broader, 

 abruptly acuminate leaves, the smaller acorn, the smaller and 

 deeper cup and the less thickened scales. All the acorns 

 examined evidently lacked all traces of pubescence on the 

 inside characteristic of J^ chrysolepis. 



£>. Wilcoxii grows in the mountain regions of Arizona. 

 All specimens seen by me, except two, are from that State. 

 The specimens of ££. chrysolepis from New Mexico and 

 Sonora, mentioned by Professor Sargent probably also be- 

 long here. 



Arizona: Fort Huachuca, 1892, T. E. Wilcox (type in 

 Columbia Univ. Herb.); Huachuca Mountains, 1895,,/. W. 

 Tourney; Massatzal Mountains, 1867, Dr. Smart, 204. 

 (young shoot in flower); 187 1, Wheeler (leaf from shoot); 

 Santa Rita Mountains, 1881, C. G. Pr ingle. 



Utah : Washington, 1874, ^- £*• Tarry (young shoot). 



Nevada: 1872, Lt. Wheeler (young shoot). 



Illustrations : PI. jj. f. j-4.. 



28. Quercus iiypoleuca Engelm. Trans. St. Louis Acad. 



3: 384. 1876. 

 JQucrcus confertifolia Torr. Bot. Mex. Bound. Surv. 207. 

 1858. Not H.B.K. 



