On the Plants of the World before Man. 275 
out marked geological affinity, we have Ficus asarifolia and 
Ficus Daimatica, as positively identified so far as identity may b 
ascertained from fossil leaves, with two species of d’ Hitingshau- 
sena, the first from Bilin, the second from Mount Promina, two 
localities now referred to the Oligocene (Zongrian); Ficus 
tiliefolia, a Miocene type, easily recognized, and found in the 
flora of the whole thickness of the Western Tertiary strata, 
even in the Pliocene of California ; a Diospyros ; a fine Laurus ; 
a Sabal anda Fucus, all of recent types. A Salvinia also should 
be mentioned, as all the species of this genus have as yet been 
referred to the Miocene. 
et it is not merely from the identification of a few plants 
that_a relation between the floras of two epochs should be 
fixed or admitted, but from the general characters of the vege- 
tation representing the climate, and from the general facies 
resulting from the progress of the vegetation, in passing from 
types admittedly inferior to others of a more advanced degree 
of perfection becoming more predominant. Considered in 
from separate groups of plants, like those which in Europe are 
referred to the Paleocene and the Eocene. This idea seems con- 
i o 
* This Greenland flora, in the opinion of Saporta, Gardner, and other European 
authors, is closely related to the Eocene flora of Europe. 
