46 Annals of the South African Museum. 



Ci/catlolepia joikin-'^iaiia (Tate), and The scale-leaves and stems from English 

 Bcnxtedtia sp. and Wealden beds referred to in the 



account of these Uitenhage fossils show 

 a very close resemblance to the African 

 specimens. 



Araucaritcs rocjcrsl sp. nov. The genus Araucaritcs was widely 

 distributed as a member of Jurassic floras, but its occurrence also in 

 Wealden beds renders it of uncertain value as an index of age. 

 Such forms of Araucarian cone-scales as resemble Araucaritcs 

 rogersi most closely are from Jurassic horizons. 



It seems clear that the Uitenhage plants include types in part 

 cliaracteristic of Wealden and in part indicative of Jurassic floras. 

 On the whole there is a balance of evidence in favour of a Wealden 

 horizon. The comparative paucity of species and the fact that 

 several forms are represented by small fragments render conclusions 

 as to age somewhat difficult ; but I have little hesitation in stating 

 that the flora exhibits moi'e well-defined points of contact with 

 plants of Wealden age than with older floras. The impression, 

 given by the occurrence of Wealden species with others more nearly 

 allied to Jurassic types is that this flora from Cape Colony, repre- 

 sented by a small number of species, marks a phase of Mesozoic 

 vegetation on the boundary of the Jurassic and Wealden periods. 

 Between Wealden floras, especially such as are known from the 

 lower beds of the formation, and Oolitic floras, there exist but minor 

 differences. It was during the period immediately succeeding that 

 represented by the English Wealden strata that the plant-world 

 experienced a striking change. Before this change took place there 

 appears to have been a long period during which but little alteration 

 occurred in the composition of the Mesozoic vegetation. 



