3IEÖ0Z01C PLANTS FUOM KOilEA. 13 



pointed jipex. Tliesü are here also treated as belonging to the 

 same species, altliougli with douljt. 



NILSSONIA Brongn. 



NILSSONIA ORIENTALIS Heek. 



PI. III., figs. 1-5. 



1878. Nlksoiiia orlenialis Heer: Beitr. zum Juraflora Ost- 

 sibiriens u. d. Amurlandes. P. 18, pi. IV., figs. 

 5-9. 

 1889. JV. orientalis Yokoyama : 1. c. P. 41, pi. XIV., figs. 



4-9. 

 1897. N. cfr. orlenialis Nathorst : Zur Mesoz. Flora Spitz- 

 bergens. P. 24, pi. I., figs. 18, 19. 

 Frond longly oval, entire ; truncated at the apex and at- 

 tenuated gradually below. Veins fine, dense, o-4 in the space of 

 1 mm. ; slightly curved and directed forward, especially near the 

 apex. 



None of the fronds of JVilssonia orientalis from Siberia figured 

 by Heer are complete. Yet, the Korean specimens show in 

 general a great resemblance to them and also to the Japanese 

 specimens described by Prof. Yokoyama. The only difference 

 between the Korean and the Japanese specimens is that the base 

 of the frond in the former is not so much rounded as in the 

 latter. The writer, however, thinks it almost certain that Ijoth 

 belong to one and the same species. Their resemblance to the 



