CLADOPHLEBIS. 99 



3. Cladophlebis Browniana (Bunker). 



1846. Pecopteris Browniana, Dunker, "Wealdenbildung, p. 5, pi. viii. fig. 7. 



1848. Pecopteris Browniana, Bronn, Index Pal. Nomencl. vol. ii. p. 914. 



1849. Pecopteris Browniana, Brongniart, Tableau, p. 107. 



1850. Pecopteris Browniana, Unger, Gen. spec, plant, foss. p. 176. 



1852. Alethopteris Reichiana, Ettingshausen, Abh. k.-k. geol. Reichs. vol. i. 



Abth. iii. No. 2, p. 17. 



1869. Alethopteris Reichiana, Schimper, Trait, pal. veg. vol. i. p. 569. 

 1871. Pecopteris Browniana, Schenk, Palseontographica, vol. xix. p. 215, 



pi. xxvi. figs. 2 and la. 

 1874. Alethopteris (?) Browniana, Schimper, loc. cit. vol. iii. p. 502. 



Type. Small terminal pieces of pinnae. 



Dunker compares his species to P. Reichiana, Presl, and defines 

 it as follows : 



" Pecopteris fronde pinnata (bipinnata?) pinnis lanceolatis, 

 pinnulis linearibus apice obtusis adnatis, oppositis et alternis, venis 

 tenerrimis obliquis instructis ; rhachi tenui." * 



There are a few specimens in the Museum Collection which 

 agree very closely with this species, and show certain characters 

 which distinguish them from Cladophlebis Dunkeri, Schimp. They 

 add very little to our knowledge of Banker's species. 



Frond bipinnate, pinnae alternate or sub-opposite, long, and of 

 uniform breadth; pinnules approximate, obtusely pointed; venation 

 of the Cladophlebis type. 



Ettingshausen has followed Bunker's example in comparing 

 Cladophlebis Browniana with Pecopteris Reichiana, Presl, and, 

 indeed, includes the former as a synonym of the latter. Schimper, 

 in the first volume of his standard work, takes the same view, 

 but in the third volume he reverts to Bunker's original specific 

 designation. 



Schenk, as previously noted, has probably included under 

 Bunker's species examples of Cladophlebis Dunkeri, but in pi. xxvi. 

 fig. 2, Palaeontographica, xix. he figures what I regard as a true 

 Cladophlebis Browniana ; the bluntly pointed approximate pinnules 

 with entire margins are of rather a different type to that which 

 characterizes the larger pinnae of C. Dunkeri. The latter species 

 is a tripinnate form, but C. Browniana appears to be bipinnate. 



Wealdenbildung, p. 5. 



