72 Bulletin of the Unversity of Texas 
above, smooth on both surfaces, paler beneath with prominent 
whitish midrib and relatively few strong regular, prominent 
lateral veins. The acorns are borne upon short stalks, nut 

ge. 12. Quercus Michauxii. 
oblong to ovoid, about one-third enclosed in the thin walled, 
warty scaled, hemispheric cup. 
Occurs only in canyons of central Texas. 
9. Quercus Durandii Buckley. Durand’s Oak. A _ tree 
reaching a maximum height of 40°-50° with trunk diameter 
of 2°-3°. Bark light gray, somewhat scaly about 14’-34’ thick. 
