


Japanese Species of Betula. 



these newly found Betulae to the already known species, we can now count 9 species and 5 varieties in the 
Japanese flora. 
I shall here describe the newly found species and add some notes on others. 
1. Betula globispica (new sp.) (Fig 1 一 5.) 
Jap. Jizokamba. (newly 588 
I first discovered this species on 17th October 1893 at Katsuradaira Forest situated near the summit 
of a peak in the Mitsumine mountain at a distance of about 24 cho from the Mitsumine temple. I found the 
same species for the second time on 3rd April of this year in Nikko, near the tea-house in front of the 
Kegon-waterfull. Different from all the other species of Betula, the form of the strobile of this species is 
almost globular and very characteristic. Ihave therefore named my species globispica. 
Description :—A large tree attaining to the height of 20 meters or more. Bark,—grayish-brown, hard and 
thick, not papyrous, at first smooth, cracked and falling off in patches when old. Wood,—white with light 
brown tinge, harder and heavier than that of B. alba, var. vulgaris, Leaves,—round-rhombic, serrate, 
cuneate at the base, pointed at the apex, hairy on the midrib and veins of the under surface, petiole also hairy. 
Strobile,—globular or oval; scale loosely arranged, persistant, with a long foot, deeply 3-lobed; lobes spatulate, 
at first ciliate at the margin, afterwards smooth ; median lobe longer than the lateral, almost as long as the foot. 
Nutlet,—oval, lenticular, wingless. 



