216 R. W. Chaney — Flora of Payette Formation. 



Acer gig as 

 Acer n. sp. 

 Aesculus simulata 

 Odostemon simplex 

 Betula n. sp. 

 Glyptosir obits europceus 

 Laurus princeps 

 Finns knowltoni 



Platanus dissecta 

 Prunus n. sp. 

 Quercus clarnensis 

 Quercus day ana 

 Quercus n. sp. 

 Salix californica 

 Salix perplexa 

 Sapindus oregonianus 



Vlmus calif ornica 



Regarding the four new species, it has been thought 

 best to delay describing and figuring them until further 

 collections have been made and their relations are more 

 fully understood. In so far as they resemble fossil or 

 living forms , they will be considered in correlation, and 

 their ecological significance also will be discussed below. 



The following table shows the distribution of the 21 

 species which are common to the Payette and to other 

 localities where the age of the beds is known with 

 reasonable certainty : — 





Eocene 



Oligo- 

 cene 



Miocene 



| 











| 





Q 











1 - 







> 



w 



3 



3 



5 



CD 

 CD 



5 



of 



CD 









o 



w 







pi 

 o 



pi 



CD 



d 



CD 

 p. 



CD 







PI 



CD 



^ 







+3 



CD 



6 



03 



o 





1? 



'B 



CO 



CD 



3 



H 



o 

 O 





Acer gigas 















X 











Aesculus simulata 















X 











Glyptostrobus europaeus 















X 











Juglans oregoniana 















X 











Laurus princeps 





















X 





Odostemon simplex 









X 

















Pinus knowltoni 











X 















Platanus dissecta 







X 









X 



X 



X 



X 





Populus lindgreni 















X 









! 



Quercus clarnensis 









X 

















Quercus consimilis 









X 

















Quercus dayana 















X 



X 









Quercus simplex 



X 







X 

















Quercus simulata 











X 















Salix angusta 





X 











X 











Salix californica 



















X 







Salix perplexa 













X 



X 











Sapindus or-egonianus 















X 











Sequoia angustifolia 













X 



X 











Ulmus californica 







X 









X 



X 



X 







Ulmus speciosa 









X 



X 















Total species 



1 



i 



2 



5 



3 



2 



12 



IT 



3 



2 





