82 THE OLDER MESOZOIC FLOEA OF VIRGINIA. 



described. Nothing definite can be seen in the granulation that covers the 

 leaflets. This granulation does not appear to be anything like fructification. 

 In my first collections of plants from Clover Hill I had found frag- 

 ments of leaves having the above-described character, but usually showing 

 only small bits of the leaflets, and sometimes ends of the same nearly entire. 

 The preservation of the ends of the leaflets in these cases is due to the fact 

 that the cartilaginous border that runs around the edge of the leaflets is 

 thicker at the ends than elsewhere. The leaflets often show a tendency to 

 split longitudinally. It was not until my last visit to the above-named 

 locality that I succeeded in finding quite complete specimens. On this 

 occasion I was fortunate in finding several fragments showing a number of 

 attached leaflets, with the terminal leaflet, as well as several large specimens 

 containing attached and very large lateral leaflets, from portions lower down 

 on the leaf. Some of these were well enough preserved to show all the 

 details of the nervation. In all the cases where I have indicated the outline 

 of the entire leaflets by dotted lines on fragments I have done so after 

 seeing such restored parts on other and detached leaflets. Thus while for 

 the individual fragmentary specimens the dotted outline is ideal, it represents 

 dimensions and shapes actually seen on other specimens. Plate XLIII, 

 Fig. 1, represents a specimen of one of the smallest forms of the plant of 

 natural size, and as seen in one specimen. It will be seen in this specimen 

 that while the basal portions of the leaflets and their insertions are quite well 

 preserved, yet the upper parts of the leaflets do not show their true width, 

 owing to the laceration of their margins, while the ends of all are missing. 

 The nervation and granulation are given on the terminal leaflet and one of 

 the lateral ones, as they appear to the unassisted eye. The great strength 

 of the midrib of the plant is plainly shown in this specimen. Here, not far 

 from the termination of the leaf (for the specimen is the upper part of a leaf) 

 we find the midrib to be nearly 1£ centimeters wide. The entire leaf could 

 not be less than a meter in length. Plate XLV, Fig. 1, gives a more frag- 

 mentary specimen, in which the terminal part of a leaf is seen, and in which 

 I have restored by the dotted lines the outlines of the leaflets as they must 

 have existed. The shape of the terminal leaflet is given as seen in a speci- 

 men where its true outline could be made out. This specimen seems to 



