40 THE RARITAN FLORA. 



been recorded from a large number of Cretaceous localities and 

 becomes even more cosmopolitan in the Tertiary, but is restricted 

 in modern times to the i\ustralian region. 



There are 9 Raritan species of Ulmbellales, forming 7% 

 of the angiosperms represented. This is about one-third the 

 number present in the Dakota Group. These include 7 species 

 of Aralia whose modern relatives are to be found in allied genera 

 of the warmer regions of the globe. There is a very doubtfully 

 identified species of Viburmini and a species of Cornophylluin 

 which is closely allied to species of Coniits found in the Magothy 

 and Tuscaloosa formations, the Atane beds and the Dakota 

 Group. 



The order Ericales has 4 species of Athdroincda in the Rari- 

 tan flora, and the order Primulales has 3 species of Myrsine, 

 all with an outside distribution and with modern representatives 

 in warmer climes. 



The order Ebenales is represented by 3 species of Diospy- 

 ros, one of which is very abundant both in New Jersey and else- 

 where ; and the order Gentianales is represented by a single 

 species of Acerates. 



While the flora as a whole differs from any modern Ameri- 

 can flora with which it may be compared by the association of 

 forms which have since become segregated by the diversified 

 climate of later geological time, it is distinctly suggestive of 

 existing floras, meaning by this that it is the earliest known 

 flora in which the same plant groups which dominate in the 

 present flora of the globe are largely represented. 



Of the 78 genera known from the Raritan formation, only 32 

 are extinct, and 11 of these genera are gymnosperms, or lower 

 plants, and of the remainder about a dozen belong to genera 

 like Calycites, Carpolithiis, Palaeauthus, Lcgumiiiositcs, etc. Of 

 the 45 known genera of Raritan Angiospermae, only 11 have 

 since passed entirely away. 



With the exception of the Araucarieae, Proteacece and Euca- 

 lyptus, which have since become gradually restricted to the south- 

 ern hemisphere, we would have no difficulty in acclimitizing the 

 Raritan flora in our present Gulf States, and the modern repre- 

 sentatives of the groups since become antipodean would flourish 



