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治 明 
ーー 
ーー+ 
ewe we AA seek + 
Japanese Species of Betula. 

The specimen figured was collected at Chiizenji in Nikko. 
6. Betula Bhojpattra, Wall. var. subcordata, Maxim, 
7. Betula Bhojpattra, Wall, var, Jacquimontii, Regel, (Fig, 23,24.) 
Jap. Nagaba-no-onore. 
Of the 3 varieties of this species, var. subcordata has not yet been collected by us, and the var. Jacquimontii 
is the newly found variety. Not yet mentioned in uropean works on the Japanese flora. 
In Regel’s “Monograph of Betula” it is stated that the bark of this Species is papyrous and is used by the 
Hindoos as a substitute for paper, which character, in spite of the close coinsidence of the other characters does 
not agree with the bark of our plant, which is like that of Betula globiscipca, I venture to say it is not impossible 
that there was some error on this point in Wallich’s original remark. 
8. Betula grossa, 8, et Z, (Fig. 13 一 15.) 
Jap. Midzume ; Koppada-minebari; Itaya-minebari ; Midzune. 
The specimen figured was collected by me in Nikko near Yumoto. 
9. Betula ulmifolia, S. et Z. (Fig, 16 一 19.) 
Jap. Oba-minebari ; Yoguso-minebari, 


