138 AET. 12. — K. YEXDO. 



Mont, in the present work, but is rather to be referred to the 

 species here mentioned. The leaves of this plant are not oblique, 

 as in Sargassiim heterocystum, and the vesicles are generally 

 much smaller. The receptacles are triquetro-cylindrical, verru- 

 cose, and each separated by a short stalk. Had not J. Agaedh^^ 

 remarked that the receptacles on the upper portion of the 

 fronds of the present species were poorly spinulated, I should not 

 have hesitated to include our plant under the section Malacocarjncœ. 

 It is to be noted that the elevated cryptostomata on the softer 

 jyavts of the stems, leaves, and often on the receptacles, give a 

 spinulose appearance to these ipavts in a dried specimen. 

 Locality. Loochoo (K. Miyake, h. sc. coll.). 



Sargassu^n rnicrocystmn J. Ag. 



Spec. Alg. I. p. 323.— /(/.: Spec. Sarg. Austr. p. 94 Tab. XXVIII. 

 fig. 1.— KÜTZ.: Spec. Alg. p. 608.— W.: Tab. Phyc. Rd. XI. Taf. 0. 

 -De Toni: Syll. Alg. III. p. 57. 



I have only one sterile sjiecimen, collected at Bindare, Hiuga 

 Prov., and which exactly agrees with descriptions of the present 

 species. Our plant has the leaves somewhat narrowed above, but 

 the characteristic shai-p and rich dentation on them is perfectly 

 manifested. 



Locality. Hiuga Prov. (!). 



Trilw 4. FRUTICULIFERjE J. Ag. 



The following four species of this tribe have hitherto been 

 assigned to the Japan coast. Their specific limits are by no 

 means very clear. Beaides, there exist seyeral species of Acantho- 



1) Spec. Sarg. Austr. p. 99. 



