FOSSIL FLORA. 789 



the Denver beds; 3 are confined to the Fort Union, and 6 species are found 

 in the Auriferous gravels of CaHfornia. 



Of the 5 new species found in other beds, 2 are common to the older 

 or acid series and 3 to the younger or basic series. It therefore becomes 

 apparent that this flora, although reasonably distinct, tinds its greatest 

 affinity with the younger or basic series. This is shown by the species 

 common to tlie intermediate series and the Auriferous gravels and by the 

 new species common to the basic series. This is not especially pronounced, 

 and could hardly be made out for the intermediate flora as a whole, were it 

 not for certain species that come from rocks that are directly succeeded by 

 the basic rocks. For these reasons it was at first supposed that a part of 

 the localities represented belonged to the lower and a part to the upper 

 beds, but by combining several of these this intermediate flora was worked 

 out. But, as stated above, the rocks of this series that are known to be 

 the lowest bear a flora nearest to that of the acid rocks, and the rocks 

 known to be higher hold plants most nearly related to those of the upper 

 or younger beds. 



It now remains to consider the flora of the liasic breccias and its 

 relationships. The typical locality for this flora is the Fossil Forest and 

 vicinity, including the locality on the east side of the Lamar River, between 

 Cache and Calfee creeks. This flora, as a whole, embraces 70 species or 

 forms, distributed as follows: 38 species new to science, 3 forms not spe- 

 cificallv named, and 29 species having- a distribution beyond the limits of 

 the Park. Following is a list of the species having an outside distribution: 



Lygodium kaulfusii lleer. Ficus sordida Lx. 



Sequoia langsdorfli (Brgt.) Heer. Ficus asiminwfolia Lx. 



Juglans califoruica Lx. Magnolia califnriiica Lx. 



Juglaiis rugosa Lx. Lauras califoriiica Lx. 



Hicoria autiqua (Newby.) Kn. Laurus primigeuia? Ung. 



Populus bal.samoides Gcipp. Laurus grandis Lx. 



Salix variaus Heer. Persea pseudocarolinensis Lx. 



Salix augusta AL Br. Platauus guillelma» (iiipp. 



Salix elongata Heer. Ebus mixta Lx. 



Corylus macquarryi (Forbes) Heer. Elteodendron polymorphnm Ward. 



Quereus furciuervis americaua Ku. Sainiidus granditblius Ward. 



Ulmus pseudo fulva Lx. Ehamuus rectiuervis Lx. 



Planera longifolia Lx. Aralia notata Lx. 



Ficus sUasteiisis ? Lx. Aralia whitiieyi Lx. 



