110 



SILVA OF NORTH AMERICA. cupuLirERiE. 



peduncle ; the nut is oval, broad at the base, full and rounded at the apex, and about an inch and a 

 half long and three quarters of an inch wide, with a thick shell slightly scurfy-pubescent on the inner 

 surface and purple separable cotyledons ; the cup, which embraces only the base of the nut, is cup- 

 shaped, shallow, thickened below and thin at the rim, light brown and pubescent on the inner surface, 

 and covered by thin ovate acute scales, with free chestnut-brown tips more or less hidden by a thick 



of hoary tomentum. 



Quercus tomentella inhabits deep 



d high wind-swept slopes on Santa Rosa and 



Santa Cruz Islands south of Santa Barbara and on Santa Catalina Island south of Cape St. Vincent in 

 California, and on Guadaloupe Island off the coast of Lower California, where it was discovered by Dr. 

 Edward Palmer in the spring of 1875. 



The wood of Qiiercus tomentella is heavy, hard, close-grained, and compact, with a satiny surface ; 

 it is pale yellow-brown, with lighter colored sapwood, and contains broad bands of open ducts parallel 

 with the wide conspicuous medullary rays. The specific gravity of the absolutely dry wood is 0.7214, 

 a cubic foot weighing 41.95 pounds.^ 



I 



Sargent, Garden and Forest, iii. 355. 



EXPLANATION OF THE PLATE. 



Plate CCCCIL Quercus tomentella 



1. A flowering branch, natural size. 



2. A flowering branch, natural size. 



3. A staminate flower, enlarged. 



4. A stamen, enlarged. 



5. A pistillate flower, enlarged. 



6. A fruiting branch, natural size. 



7. A nut, natural size. 



