L] 



earitania; schizolepis 



439 



imperfectly preserved cone was found on a peduncle having leaves 

 similar to those on the vegetative twigs. Some fragmentary 

 lignitic branches (fig. 807, C) associated with the impressions 

 showed the anatomical characters of a Conifer; but HoUick and 

 Jeffrey, though beheving that the fragments 'almost certainly' 



Fig. 807. A, B, Raritania gracilis; C, Baritania'!. (After HoUiok and Jeffrey. 

 A, B, x6; C, X 10.) 



belong to Raritania, admit that there is no proof of their identity 

 with the dichotomously branched impressions. The secondary 

 xylem of the cylindrical stele of the twigs, one of which is shown 

 in fig. 807, C, agrees with that of Brachyphyllum macrocarpum 

 Newb. The uniseriate bordered pits are occasionally flattened; 

 the cortex, confluent with the decurrent leaves, contains sclerotic 

 cells and each leaf has a resin-canal subtending the leaf-trace. 

 The genus is referred to the Araucarineae on the evidence of the 

 occurrence of flattened pits at the ends of some of the tracheids, 

 a conclusion difficult to accept without considerable reservation. 



SCHIZOLEPIS. Braun. 



Braun^ instituted this genus for a strobilus from Ehaetic 

 rocks in Germany which he called Schizolepis liaso-Jceuperinus, 

 1 Braun (47) p. 86. 



