450 FLORA OF THE CARBONIFEROUS PERIOD. 



In habit of growth this species resembles L. elegans, for which 

 imperfect specimens might be mistaken. It abounds in the Middle 

 coal measures. 



3. L. rimosum, Sternberg. 



M. C. Sydney, R. Brown ;. Joggins, J. TV. D. 



4. L. dichotomum, Sternberg, (Z/. Sternbergii, L. & H.) 



M. C. Sydney, R. Brown ; Joggins, J. W. D. ; L. C. Horton, 

 J. TV. D. 



5. L. decurtatum, s. n. 

 M. C. Pictou, J. TV. D. 



Areoles approximate or separated by a shallow furrow, rhombic, 

 ovate, obliquely acuminate below, nearly as broad as long, wrinkled 

 transversely, especially on the middle line, which appears tuber- 

 culated, vascular scar rhombic, twice as broad as long, with three 

 approximate vascular points. In some flattened specimens the 

 line separating the areoles is indistinct, and the scars appear on a 

 transversely wrinkled surface without distinct areoles. 



6. L. undulatum, Sternberg. 



M. C. Sydney, R. Brown, Joggins and Pictou, J. TV. D. ; U. C. 

 Joggins, J. TV. D. 



Possibly several species are included under this name, but they 

 cannot be separated at present. 



7. L. dilatatum, Lindley and Hutton. 

 M. C. Joggins, J. TV. D. 



8. L. like tetragonum, Goept. 



L. C. Horton, J. TV. D. 



Obscurely marked, but a distinct species, unless an imperfectly 

 preserved variety of L. tetragonum. The areoles are square with 

 a rhombic scar at the upper corner of each. 



9. L. binerve, Bunbury. 

 M. C. Sydney, R. Brown. 



10. L. tumidum, Bunbury. 

 M. C. Sydney, R. Brown. 



I think it probable that this species belongs to the genus Lepi- 

 dophloios, but I have not seen a specimen. 



11. L. gracile, Brongt. 

 M. C. Sydney, R. Brown. 



In Brown's list in Ac. Geology. Probably a variety of the next. 



12. L. elegans, Brongt. 

 M„ C. Sydney, R. Brown. 



In Bunbury's and Brown's Lists. 



13. L.plumarium, L. and H. 



