157 



subtruncated utriculi predominate. To me, at the present knowledge, 

 the existence of that species in this country seems to be somewhat 

 doubtful, if Holmes' C. divaricatum is surely different from C. 

 elongatum Ag. and not the same species, I do not doubt that my 

 plant in question is C. divaricalum, though I have not seen his 

 specimen. 



The specimen (No. 25) which I sent to De Toni under the 

 name of C. elongatum with the Japanese name " Naga-miru " is 

 indeed the present species. The Japanese name given to that 

 species is erroneous owing to the confused using for this plant and 

 C. cylindricion Holm. 



In my herbarium I have a specimen of C. elongation Ag. from 

 Brasil sent to me from Mr. Reinbold. In making study of this 

 specimen in comparison with our plant I have found that the difference 

 between the both plants exists in the form and apical thickness of 

 utriculi. Is it not fact for C. elongatum Ag. that the dried frond 

 is thin and soft owing to the thin-walled utriculi, while in C. divari- 

 cation Holm, thickish and stiff on account of thickened apex of 

 utriculi ? 



/. hybrida Okam. PL. CXXXV, fig, 17. 



Utriculi partly mucronated and partly rounded at apex. 



Statue of frond, colour and substance quite those of the C. 

 divarication Holm., only differing in the form of utriculi which 

 presents partly mucronated apex after the manner of Codinm 

 mucronatum and partly rounded and thickened as in the typical 

 species, and in consequence the frond is partly rough to touch and 

 partly smooth. Probably a hybrid form between C. uuicronatuin 

 j. Ag. var. Calif or iiicuin }. Ag. and C. divarication Hoi in. 



