76 THE LATEK EXTINCT FLORAS OF NORTH AMERICA. 



QUERCUS LAURIEOLIA Newb. 

 PL LIX, fig. 4 ; LX, fig. 3. 

 Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 505. 



"Leaves petioled, lanceolate, 6 inches in length by 1£ inches in width, 

 equally narrowed to the point and petiole; margins entire, or faintly 

 toothed, or undulate; nervation regular; midrib strong, straight, lateral 

 branches, about ten pairs, arching gently upward, terminating in the 

 margins." 



Collected by S. M. Rothhammer, on the expedition of Gen. Alfred 

 Sully. 



Although reluctant to add one more to the large number of ill-defined 

 species of oak which have been established upon the fossil leaves brought 

 from the far west, this seems to be inevitable, inasmuch as the leaves before 

 us are in all probability those of Quercus and distinct from any hitherto 

 described. The most striking feature in these leaves is their elegant lanceo- 

 late and symmetrical form, broadest in the middle and narrowing regularly 

 to the pointed base and summit, The craspedodrome nervation and the 

 undulate or faintly toothed margins seem to separate these leaves from 

 Laurus and connect them with the oaks. The figures given but imper- 

 fectly represent the leaves in question, but it is hoped that the description 

 will permit their identification when found. 



Formation and locality: Tertiary (Eocene ?). Burned shales over lignite 

 beds, Fort Berthold, Dakota. 



Quercus paucidentata Newb. 



PL XLIII, fig. 1. 

 Proc. U. S. Nat. Mus., Vol. V (March 21, 1883), p. 505. 



"Leaves oblanceolate, 6 inches in length by 1J in breadth, narrowed 

 to the base, sometimes unsymmetrical, long-pointed, and acute at the 

 summit; margins entire below, coarsely toothed above; nervation strong 

 and regular, about ten branches on each side of the midrib, which curve 

 upward, festooned below, terminating in the teeth above." 



Collected by Rev. Thomas Condon. 



No complete specimens of these leaves are contained in the collection, 



