490 FLORA OF THE SECONDARY SERIES. 
SECTION III. 
VEGETABLES IN STRATA OF THE SECONDARY 
SERIES.* 
Fossil Cycadece, 
The Flora of the Secondary Series t presents 
characters of an intermediate kind between the 
Insular vegetation of the Transition series, and 
the Continental Flora of the Tertiary formations. 
Its predominating feature consists in the abun- 
dant presence of Cycadeae, (see PI. 1, Figs. 33, 
34, 35,) together with Coniferae, | and Ferns. § 
(See PI. 1, Figs. 37, 38, 39.) 
*See PI. 1, Figs. 31 to 39, 
t M. Ad. Brongniart, in his arrangement of fossil plants, has 
formed a distinct group out of the few species which have been 
found in the Red-sandstone formation (Gres bigarre) immediately 
above the Coah In our division of the strata, this Red-sandstone 
is included, as an inferior member, in the Secondary series. Five 
Algse, three Calamites, five Ferns, and five Coniferse, two Liliaceae, 
and three uncertain Monocotyledonous plants form the entire 
amount of species which he enumerates in this small Flora. 
See also Jseger uber die Pflanzenversteinerungen in dem Bau- 
sandstein von Stuttgart, 1827. 
X We again refer to Witham's Account of Coniferae from the 
Lias, in his observations on Fossil Vegetables, 1833. 
§ A very interesting account, accompanied by figures, shewing 
the internal structure of the stems of fossil arborescent Ferns of 
the Secondary period, is given in Cotta's Dendrolithen, Dresden, 
1832; these appear to be chiefly from the New red sandstone 
of Chemnitz near Dresden. 
