i i a nme a ed 
Berry : Mesozoic FLORA OF THE COASTAL PLAIN 199 
second branching at an angle of about 45 degrees, strong and 
nearly straight, giving off 5 or 6 camptodrome branches on the 
marginal side ; in fact what has been called the lowest secondary 
may be a branch of this vein which separates from it at its extreme 
base. Balance of the secondaries branch at an angle of about 50 
degrees and are more curved upward in their courses. Nervilles 
largely simple, straight or curved. 
Represented in the collections from Court House Landing, 
North Carolina, by the specimen figured and its incomplete 
counterpart. 
There are two recorded species of Pterospermites in the United 
States Cretaceous, one (P. modestus Lesq.) occurring on Staten 
Island and in the Tuscaloosa of Alabama, both of which are very 
distinct from the Carolina leaf, which does, however, resemble 
somewhat one of the two species (P. cordifolius) which Heer 
records from the Atane beds of the west coast of Greenland. 
There is also considerable resemblance to the leaves from the 
Wyoming Laramie referred by Lesquereux to Apeibopsis ? discolor, 
and to several of the leaves of Ficus found in the Montana 
formation. 
During the Eocene there were species in Alaska and Europe 
and the genus continued through the Tertiary with upwards of a 
dozen species in the Miocene. 
Pterospermites credneriifolius sp. nov. PLATE 13, FIGURE 4. 
This species is unfortunately founded upon an imperfect speci- 
men, 5 cm. long by 4 cm. wide, of the terminal part of a leaf with 
truncated apex and slightly dentate margin. The midrib is stout 
and widens rather rapidly below. Secondaries regular, sharply 
defined but thin, branching from the midrib at an acute angle and 
running with but a slight curve to the marginal dentations. 
If leaves of the genus Credueria Zenker, which form so promi- 
nent an element in the upper Cretaceous floras of Europe, were 
commonly recognized in America, I would say that this leaf was 
referable to that genus; or, did the remains consist of more exten- 
sive or complete material, it might be possible to identify it with 
the Credneria denticulata of Zenker, which Richter * makes a 
variety of Credneria Zenkeri and which is abundant in the Senonian 
* RICHTER, Die Gattung Credneria Zenker. 13. p/. 2. f. 6,75 pl. 6. fi 1, 12. 
Engelmann, Leipzig, 1906. 
