FOSSIL FLORA. 713 



alternate, emerg'ing at an angle of 35° to 45", cnrving npward, camptd- 

 drome; none of the finer nervation preserved. 



This leaf is 15.5 cm long' and almost S oni. wide in the broadest part, 

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

 apex, and A-ery broadh' or obtnsely wedge-shaped at base. The margin is 

 entire except for a curious indentation on one side, wliicli has probabl v 

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

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

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



It is possible that the fragment of tlie l)ase of a leaf described and 

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

 ously impossible to l.)e certain of this. It is also ttndonbtedly related to, 

 and is possibly identical with, 7^ asini'nircfolhi Lx.,* from Placer County, 

 California. This has tlie 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. 



FlCUS UNGERI Lx. 



ri. XOL fig. 3. 



Ficus ungeri Lx.: Tert. FL. p. 105, PL XXX, fig. 3; Cret. aud Tert. Fl., p. 103, PL 

 XLIV, figs. 1-3. 



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

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

 F. H. Knowlton, August 4, 1888. 



Ficus sp. 

 PL LXXXIX. fig. ,3. 



This is too fragmentary to jjermit 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: Yellow.stone River, one-half mile below mouth of Elk Creek, 

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



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



