OF J,OWKK GREKNSAND PLANTS. 



311 



minimum possible for this specimen, and it may have been 

 much larger. The chief differences between this form and 

 G. Tatesii are : the shape and size of the leaf-bases (see text- 

 figs. 98 and 100), and the indefinite number of thick wood-rings 

 in the stem. 



The pith measured not less than 6 cm. in diameter, but its 

 actual size is uncertain. The cast of its surface shows the 

 rough lenticular ridges and groups characteristic of this genus. 



Text-fig. 99. Cyoadeoidea buzza.rdeHsis, sp. nov. Rough sketch of the 

 broken block of wood, showing parts of at least eight concentrically 

 arranged rings of secondary wood. X 3. Ko. V. 5895. 



The wood is in distinct, concentrically arranged rings : in 

 one specimen, which is very incomplete, there are three ; in one 

 of the types there are four, and in the other type there are at 

 least eight woody cylinders (text-fig. 99). These wood-rings 

 can be clearly recognised with the naked eye, and show well in 

 the broken surface of the trunk (text-fig. 98, B, and text-tig. 99). 



The microscopic section is so opaque that very little detail 

 can be seen ; the tracheids. however, can be recognised in places. 



