MESOZOIC PLANTS FROM KOREA. 10 



Some bring P. Nordenskjoldi under the genus CyclojyitySj 

 against which view Prof. Yokoyama'^ has given a short argument 

 in his description of the Jaj^anese examples, citing the opinion 

 of Nathorst. Potonie also made a remark on Cyclopitys?^ But 

 in this place, it is sufficient to mention that the Korean example 

 lacks the transverse wrinkles, though the longitudinal striae are 

 quite distinct. 



The smaller leaves (fig. 10) are about 1 mm. broad and 

 more than 2 cm. long with a distinct midrib ; there are no other 

 particular characters to be mentioned. Finus cfr. prodromus Hr. 

 from Japan^^ is at least a similar plant, if not specifically identical. 



Though these two fossils are not of much value either from 

 the chronological or the botanical point of view, yet they are 

 at least worthy of consideration as representatives of the scanty 

 remains of Coniferae in the deposit. 



PTERIDOPHYTA. 



FILICINAE. 



LEPTOSPORANGIATAE. 



POLYPODIACEAE. 



ONYCHIOPSIS, YoK. 1890. 



(Jour. Coll. Sei. Japan, vol. TH., 1890, p. 26. Cat. Mes. 

 PI. Dep. Geol. Brit. Mus. Wealden Flora I., p. 

 40, 1894.) 



1) YOKOYAMA : 1.' c. p. 63. 



2) Potonie: Pflaiizenreste ;ius der Juraformation. Futterer'a Durch Asien III. 

 o) YOKOYAMA : 1. c. p. 62, pi. XII., fig. o. 



