FOSSIL FLORA. 713 



alternate, emerging at an angle of 35° to 45°, curving upward, campto- 

 drome ; none of the finer nervation preserved. 



This leaf is 15.5 cm long and almost 8 cm. wide in the broadest part, 

 which is high above the middle of the blade. It is long-obovate, obtuse at 

 apex, and very broadly or obtusely wedge-shaped at base. The margin is 

 entire except for a curious indentation on one side, which has probably 

 resulted from an injury of some sort. This indentation passes nearly to the 

 midrib and has rounded lobes. The secondaries adjacent to this are also 

 distorted, being much curved. The finer nervation is not preserved. 



It is possible that the fragment of the base of a leaf described and 

 figured on PI. LXXXIX, fig. 7, is the same as this species, but it is obvi- 

 ously impossible to be certain of this. It is also undoubtedly related to, 

 and is possibly identical with, F. asimincefolia Lx., 1 from Placer County, 

 California, This has the same shape and nervation, but for obvious reasons 

 it is best to keep them separate, at least until additional specimens can be 

 obtained. 



Habitat: Yellowstone River, one-half mile below mouth of Elk Creek, 

 base of bluff; collected by F. H. Knowlton. 



Ficus ungeri Lx. 



PI. XCL fig. 3. 



Ficus ungeri Lx.: Tert. Fl., p. 195, PL XXX, fig. 3; Oret. and Tert, Fl., p. 163, PI. 

 XLIV, figs. 1-3. 



Habitat: Yellowstone River, 1 mile below mouth of Elk Creek, west 

 side; and about same distance above Hellroaring Creek; collected by 

 F. H. Knowlton, August 4, 1888. 



Ficus sp. 



PI. LXXXIX, fig. 3. 



This is too fragmentary to permit even the generic determination, but 

 it seems to belong to Ficus. It consists of the base of a thick leaf having 

 a thick midrib, with rather thin parallel secondaries and a short very thick 

 petiole. 



Habitat: Yellowstone River, one-half mile below mouth of Elk Creek, 

 base of bluff; collected by F. H. Knowlton, August, 1888. 



1 Cret. and Tert. Fl., PI. LVI, fig. 3. 



