) known, lobed and ( 



Thedegreeof variation admit ted in lea vesof tlw-CinkguaL-* 

 is great, and comparison may be made with such species as 

 G. diyitata, Brongniart, from the Jurassic as figured by 

 Seward, 1 or to Buiera Phillipsi, Natliorst. 3 Prom these 

 figures it will be noticed that the degree of dissection of 

 the leaf of Ginkgo is very variable, in fact it has been noted 

 that it is hard to distinguisli between Ginkgo and Baiera. 3 

 It is suggested that this form be regarded as a local vari- 

 ation of Rhipidopsisyinkgoides.* Our variety is intermediate 

 in size between Feistmantel's Indian types" and Schmal- 

 hausen's. 6 



The specimens are too imperfect to enable one to say 

 whether the lower leaflets are a size relative to those in 

 the type specimens, and as that form is an essential 

 eharaeter of Rhi p/Wopx/x. the doubt attached to the deter- 

 mination is very evident. In India Rhipidopsis giiiLyniih:* 

 occurs in the Barakar Group of the Damudas and in 

 Argentina associated with the Glossopteris Flora at Bajo 

 de Velis. 7 Schmalhausen's Jurassic beds of the Petschora 

 already referred to are now regarded as Permian. 



1 Seward, The Jurassic Flora, Yorkshire, pt. 1, 1900, t. 9, I. 2, 10. 



• Seward, op. cit., t. 9, f. 4. 



' Seward, Fossil Floras Cape Colony, Ann. S. African Museum, 1903' 



l and synonymy sen Ari.yr, <;lu«s.>pt*ris KI.th 



« Flora Gondwana System, Pal. Ind., l.swj, p. w, I 

 • Beitr. z. Jura Flor. Russlands, Mem. Acad. Imp. 

 1879, xxvii, t. G, f. 1, t. 8, f. 3-12. 



