FONTAINE, ] THE EMMONS COLLECTION. 309 
on the upper surface of the twig, but they are not so close together 
or so conspicuous as is indicated'in fig. 76. They are broadly ellip- 
tical in form, and are pressed close to the stem. No doubt the elliptical 
form is due to the pressure. They are really of the same character 
as the lateral ones or those that lie in the cleavage plane of the rock. 
These latter are very thick and leathery in texture, with more or less 
of a triangular form. They are very wide toward the base and decur- 
rent, while toward their ends they narrow rapidly and are incurved 
at their tips. They are markedly uniform in shape. They have a 
strong midnerve, which becomes very much stronger at the base. The 
second specimen now in the Williams College collection is a large 
fragment of a very fissile, argillaceous sandstone, of fine grain, that 
contains a number of fragments of ultimate twigs, with numerous 
leaves, mostly lateral or in the plane of cleavage. These twigs show 
very well the character given for the lateral leaves. They seem to 
have been quite long, and when covered with their thick, leather-like 
leaves, must have been rope-like. Some of the twigs on this fragment 
are represented on Pl. XLVI of this paper. 
Genus ABIETITES Hisinger. 
ABIETITES CAROLINENSIS Fontaine. 
Pl. XLVI, Fig. 1. 
1857. Pachypteris sp.? Emm.: American Geology, Pt. VI, p. 112, fig. 80. 
1883. Palissya carolinensis Font.: Older Mesozoic Flora of Virginia, Mon. U. 8. Geol. 
Survey, Vol. VI, p. 109, pl. li, fig. 5. 
In American Geology, Pt. VI, p. 112, fig. 80, Emmons described a 
fragment of a conifer which he regarded doubtfully as a Pachypteris. 
In Mon. U. 8. Geol. Survey, Vol. VI, p. 10€, I suggested that this 
plant is a Palissya, and that it might be called P. carolinensis. The 
original of Emmons’s figure is in the Williams College collection, and 
is the only specimen of the plant there. It is very imperfect, showing 
only a fragment of a stout ultimate twig, from which most of the 
leaves have been removed, those remaining being fragmentary. 
Emmons’s figure does not give very accurately the character of the 
plant. Pl. XLVI, Fig. 1, is given to represent it. As Emmons states, 
the stem is strong. It is even stronger than is represented in his 
figure. The leaves are short, very thick, and coriaceous in texture. 
They are of the same width from base to tip, and at each end are 
abruptly and obtusely rounded off. They are attached by a short 
petiole and the midnerve is very strong and continuous to the end of 
the leaf. The leaves seem to be arranged in two rows, which lie in 
the same plane. Only the lowest right-hand leaf is entire enough to 
give an idea of its character. This, however, has its base defective, 
as it has been crushed down on the stem, and it is broken across 
