FOSSIL PLANTS. 437 



On the largest of rny specimens, the scars are two and a-half inches long and 

 one and three-fourth inches broad. Some of these scars are distinctly marked 

 by the cicatrices of the surface nearly to the middle, or just to the point of at- 

 tachment of the strobile, which has only one-third of an inch diameter. 

 This clearly indicates that the growth of the leaves was stopped around the 

 pedicel of the cones by the compression of their open scales, and that the cone 

 itself was attached to the tree by a pedicel as small as is generally the central 

 axis of a Lepidostroibus. 



Collected in splendid specimens from Morris, by Mr. S. S. Strong. 



ULODENDRON ELONGATUM, Sp. nov. 



PI. xxiii, fig. 4. 



THE cicatrices of the surface are in this species about of the 

 same form as those of Lepidodendron rimosum, Stern., or of 

 Lepidodendron simplex, Lesqx., as represented vol. 2, pi. 45, 

 fig. 5, ofthis Report. They differ only by a narrow, elevated 

 round border, which, as they are slightly apart from each other, 

 leaves between them a narrow smooth furrow. The leaf scar 

 is nearly central, as marked on the figure, and shows the three 

 vascular points of a Lepidodendron. The strobile-scars are 

 proportionally longer and narrower, than in the former spe- 

 cies, nearly twice as long as broad, vertically distant eight 

 inches or more. 



As I have not seen any specimens with double rows of these scars, I do not 

 know at what distance they are placed horizontally, and whether they are alter- 

 nate or opposite. From the form of its cicatrices, this species might be identi- 

 cal with our Lepidodendron simplex, and the strobile scars represent the base of 

 a cone like Lcpldostrouus princcps, Lesqx., loc. cit. Both species also may be 

 referable to Lepidodendron rimosiim, Siernb., and Lepidostrolus variabilis, LI 

 and Hutt., which Prof. Geinitz, in his Verst.. p. 35, describes as the same. It 

 is only remarkable that this celebrated author persists in considering these enor- 

 mous cones as sustained at the end of small branches which, according to his 

 description, are only one-third of an inch in thickness, and that he admits the 

 round scars of cones as mere branch scars. Pie has only figured one of them, 

 however, in his tab. 3, fig. 16. It appears to represent the three different forms 

 of U lodvndron majus, under the name of llalonia punctata, LI. 



