( 220) 



yellowish and stellate-pubescent : leaf buds brown, pubescent : 

 petioles about 5 mm. long densely stellate ; leaves from oval 

 to oblong or sometimes oblong-lanceolate, acute at the apex, 

 cordate or rounded at the base, usually entire or undulate, 

 sometimes, especially on young shoots, dentate, 2-5 cm. long ; 

 upper surface pale bluish green, at first stellate, in age gla- 

 brate and shining ; lower surface densely stellate and fulvous : 

 cup shallow, about 12 mm. wide and 5 mm. deep: scales 

 ovate and corky-thickened ; acorns ovoid or barrel-shaped, 

 obtuse or acutish, about 15 mm. long. 



The leaf-form is rather variable in 4L- grisea. Sometimes 

 the leaves are more reticulate, when it is hard to distinguish 

 it from J^. Arizonica; the acorns are, however, usually 

 shorter and the cup shallower. The shallow cup with more 

 corky scales and the more or less yellowish tinge of the pu- 

 bescence on the lower surface of the leaves are the onlv 



J 



characters that distinguish it from J^. Mohriana. Sometimes 

 the leaves are broader below the middle and slightly spinu- 

 lose-dentate, when they closely resemble those of J<^. Rmoryi 

 in form ; but in that species the leaves are glabrous when ma- 

 ture. On young shoots the leaves are often sinuately toothed, 

 when they resemble those of J^. undulata, but differ in the 

 dense yellowish pubescence beneath. J^. grisea belongs to 

 the Staked Plains rather than to the mountains and its distri- 

 bution is more easterly than that of J^. Arizonica, but the 

 ranges of the two overlap. 



Texas: 1849, Wright, 665 (type) ; Painter Camp, 1850, 

 Bigelow (Mex. Bound. Surv.) ; Muerta Spring, 1881, Dr. 

 V. Havard; Eagle Mountain, Havard ; Independence 

 Spring, Havard. 



New Mexico: Santa Magdalena Mountains, 1881, G. R. 



Vascy ; Puerto de Pajaros, 1852, Bigehzv (Mex. Bound. 



Surv.); 1851-2, C. Wright, 1866; Silver City, 1880, 



Greene; Organ Mountains, 1881, G. R. Vasey ; 1881, H. 



H. Rusby. 



Arizona: 1874, Rothrock; Date Creek, 1870, E. Peters; 

 Chiricahua Mountains, 1894, Tourney, 182. 



Illustrations: Pl.j2.f. 1 ; Oersted, Liebm. ChenesAm. 

 Trop. fl. 46. f. 12 ; Sargent, Silva N. Am. pi. j8j. f. 9. 



