FLORA OP THE CARBONIFEROUS PERIOD. 433 



1. Dadoxylon Acadianum, s. n. 



M. C. Joggin, Port Hood, Dorchester. J. W. D. ; 



Large trees, usually silicified or calcified, with very wide wood- 

 cells, having three or more rows of small hexagonal areoles, 

 each enclosing an oval pore ; cells of medullary rays one-third of 

 breadth of wood-cells, and consisting of twenty or more rows of 

 cells superimposed in two series. Rings of growth indistinct. 



2. D. mater •iarium, s. n. 



M. and U. C. Joggins, Malagash, Pictou, <fec, J. W. D. Glace 

 Bay, H. Poole. Miramichi, Gr. F. Matthew. 



Wood-cells less wide than those of the last ; two to rarely four 

 rows of hexagonal discs. Medullary rays very numerous, with 

 twenty or more rows of cells superimposed in one series. Rings 

 of growth slightly marked. Approaches in the character of its 

 woody fibre to D. Brandlingii ; but the medullary rays are much 

 longer. Some specimens show a large sternbergia pith with 

 transverse partitions.* Vast numbers of trunks of this species 

 occur in some sandstones of the Upper Coal formation. 



3. D. antiqtoius, s. n. 



L. C. Horton, Dr. Harding. 



Wood-cells narrow, thick-walled, two or three rows of pores, Me- 

 dullary rays of three or four series of cells with twenty or more 

 superimposed, nearly as wide as the wood-cells. Rings of growth 

 visible. This species would belong to the genus Palceoxylon of 

 Brongniart, and is closely allied to D. Withami L. and H., which 

 like it occurs in the Lower Coal measures. 



4. D. annulatum. s. n. 



M. C. Joggins, Sir W. E. Logan. J. W. D. 



Wood-cells with two or three rows of hexagonal discs. Medul- 

 lary rays of twenty or more rows of cells superimposed, in two 

 series. Wood divided into distinct concentric circles, alternating 

 with layers of structureless coal representing cellular tissue or 

 very dense wood. A stem six inches in diameter has fourteen to 

 sixteen of these rings, and a pyritised pith about one inch in 

 diameter. This is probably generically distinct from the preced- 

 ing species. 



Araucarites, Unger. 



Araucarites gracilis, s. n. 



U. C. Tatamagouche., J. W. D. 



* Canadian Naturalist, 1857. 

 Can. Nat. 29 Vol. VIII. 



