86 EuNzu Hayata 



relationship which the flora under consideration bears to that of the 

 Old World on the west, and to that of the New World on the east. 

 The species included in parentheses are those closely related to the 

 Japanese species mentioned on the left, but not quite identical with 

 the latter. 



a. List of plants showing the close relationship which the flora 

 of Japan bears to that of the Old World on the west 

 and to that of the New World on the east. 



Ophioglossacea3 



Botrycliium virginionum Sw. 

 Opliioglossum vulgatum Linn. 



Poljpodiacea3 

 Adiantum pedatnm Ltnn. 

 Asplenium Uuta-muraria Linn. 



A. Trichomanes Linn. 

 Atliyrium thelypteroides Desv. 

 Dryopteris Linneana C. Chr. 



D. Phegopteris C. Cpiu. 



JD. Thelypteris (Sw) A. Gray. 



Onoclea sensihilis Linn. 

 FolysticJmm acnleatum (L) Schott. 

 Pteridium aquilinum Kuhn. 

 Scolopendrium vulgare Smith. 

 Struthiopteris germanica Willd. 

 Woodsia ilvensis R. Br. 

 Diplaziopsis javanica (Bl) C. Cur. 



Osmundacefe 

 Osmunda cinnamomea Linn. 

 0. regalis Linn. 



Equisetacea3 

 Equisetum arvense Ltnn. 



B. hyemale Linn. 



E. palustre Linn. 



Lycopodiacei\3 

 Lycopodium clavaium Linn. 

 L. coTYiplanatum Linn. 



Tj. Selago Linn. 



