290 



University of California. 



[Vol. 2. 



ONE-HALF MILE NORTHEAST OF FOSSIL. 

 [Locality 844.] 



Sequoia langsdorfii (Brgt.) Heer. 

 Alnus carpinoides Lesq. 

 Myrica? n. sp. 

 Fragments. 



"In attempting to work out the bearing of the plants above 

 enumerated on the question of the age of the beds, it should not be 

 overlooked that any conclusions drawn might be quite different 

 from what they would be were the whole flora of each of the locali- 

 ties to be considered. For example Dr. Merriam's collection from 

 Bridge Creek embraces only fourteen previously named species, 

 whereas the complete known flora of this locality includes over 

 forty species. And further it is impossible at the present time, 

 without having worked out the affinities of the Tertiary floras of 

 California and elsewhere, to give with any degree of completeness 

 the outside relationships of the flora of the John Day region. The 

 following conclusions, however, are not likely to be greatly modi- 

 fied by subsequent work. 



" The oldest horizon represented by these collections seems to 

 be that near the crossing of Cherry Creek [loc. 804]. The species 

 though few in number seem to have their greatest affinities with 

 forms from the lower Tertiary, and it is probable that this horizon 

 should be referred to the lower or middle Eocene. There are a 

 few species in common with Bridge Creek but in general its flora 

 has a slightly older facies. 



"The Bridge Creek [locality 811] as already suggested has an 

 ample flora which is represented by a wealth of individuals. A 

 large proportion of its species are endemic but on considering the 

 oovious relations of these, as well as the forms known from other 

 localities, an upper Eocene age is indicated. 



" Several other of the localities seem to be of the same age as the 

 Bridge Creek beds, namely: one and one-half miles east of Clarno's 

 Ferry [loc. 832]; three miles above Clarno's Ferry [loc. 840]; and 

 one-half mile northeast of Fossil [loc. 844]. Not more than three 

 previously-named species are known from either of these localities, 



