96 



CLADOPHLEBIS. 



RUSSIA. Asplenium Whitbiense, Schmalhausen, Mem. Ac. Imp. St. 



Petersbourg, vol. xxvii. ser. vii. 1880, pi. xi. figs. 1-10. 

 PERSIA. Pecopteris Whitbiensis, Schenk, Bib. Bot. Uhlworm und Haen- 



lein, vol. vi. 1887. 

 INDIA. Akthopteris Whilbyensis, Feistmantel, Foss. Fl. Gond. vol. ii. 



1880, pi. iii. figs. 1-4, etc. 

 CHINA. Asplenium Whitbyen&e, Schenk, Rich thof en's China, vol. iv. 



pi. xxxi. 



Asplenium argutulum, loc. cit. pi. xlvii. fig. 1. 

 JAPAN. Asplenium Whilbiensis, Yokoyama, Journ. Coll. Sci. Japan, 



vol. iii. 1890, pi. iii. fig. 3 ; pi. x. fig. 1 and la. 

 Asplenium argutulum, Geyler, Palaeontographica, vol. xxiv. 



1877, pi. xxxi. fig. 1. 

 AMERICA. Cladophlebis falcata, C. virginiensis, C. acuta, Fontaine, Potomac 



Flora, pi. iv. fig. 8 ; pi. iii. figs. 3-8 ; pi. v. fig. 7, etc. 

 AFRICA. Akthopteris, sp. Cf. Asp. Whitbyense (Hr.) and Asplenium. 



Cf. nebbense, Brong. (Heer), Feistmantel, Abh. k. bohm. Ges. 



Folg. vii. vol. iii. 1889, p. 68, pi. ii. fig. 12. 



Cladophlebis Alberts!! (Dunk.). 



V. 2794. PI. VIII. 



In this largest example of the species the main rachis has a 

 length of 18 cm., and is broad and flat on the upper surface. The 

 pinnae are fairly perfect throughout the entire length of the frond. 

 The falcate form of the pinnules is well marked ; their margins 

 appear to be entire for the most part, but some show indications 

 of denticulation ; the outlines are not very well denned in such 

 a matrix as we have in this specimen. Details of venation not 

 shown. Ecclesbourne. Ru/ord Coll. 



V. 712. Part of a frond well preserved, with rachis about 

 12 cm. long. The shape of the pinnules varies considerably from 

 the broadly deltoid and falcate form of the more terminal pinnae 

 to the long, narrow, and less distinctly falcate pinnules of the 

 larger and more basal pinnae. The latter come very near the 

 fragment figured by Dunker; Schenk's pinna agrees rather with 

 one of medium size. 



Venation distinct and the axes of pinnae prominent. Margins 

 of the pinnules apparently entire, but in some cases there are 

 traces of denticulation; here, again, the outlines are not very 

 sharply denned. Ecclesbourne. Dawson Coll. 



