Revisio Epilobii Japonensis 



in 



Herbario Nostri Instituti Servantur. 



By 

 T. Nakai. 



Japanese Epilobium has hitherto been seemingly neglected 

 by our botanists, and any attempt to study the Japanese 

 species of the genus will meet not a small difficulty. Mr. 

 Leveille was studying the genus for many years, and as can be 

 seen from the results of his latest investigation, he seems to 

 have almost overcome the difficulty. The following lines are 

 the results of my study on Japanese Epilobium based on the 

 material of our herbarium. Beside a few corrections on the 

 former publications of our botanists, the description of few new 

 species are given. 



I wish to express my sincere gratitude to Mr. Leveille and 

 Prof. Matsumura whose works and suggestions have helped me 

 during the cause of my present study. 



KEY TO SPECIES. 



I. Stigma quadriiida. 



A. Styli longissitni ; flores conspicui, stamina curvata. 



a) Flores simplices E. angustifolium L. 



+ :h ¥ 7 > 



b) Flores pleni E. angustifolium L. var. pleniffora Nakai. 



■V :3^-f ii-^ -yi? y > 



B. Styli inserti, flores infundibuliformes, stamina erecta. 



