04 ART. 12. — K. YENDO. 



relate more to Sargassum patens rar. Schizophylla than to the 

 present specie?. J. Agardh mentions Sargassum pinnatifidum in 

 Anal. Alg. 1. e. I have not seen his specimen ; but as far as 

 I can judge from the description his plant is probably different 

 from ours here described. 



This species has some apparent resemblance to Sargassum 

 2nluliferum Ag. This is especially the case with the lower por- 

 tions of a sterile specimen. But the latter species has the vesicles 

 always round at the apices, while in the present species they are 

 coronated with a simple or furcated leaflet, or at least they are 

 mucronated. It has still more likeness to Sargassum pxitens var. 

 Schizophylla, so much so that some fragmentary specimens of both 

 species, especially when dried, can hardly be distinguished from 

 one another. The present species, indeed, shows characters to 

 some extent intermediate between the two species above mentioned. 

 The short lateral branches with approximate leaves, however, 

 may in many cases serve to distinguish the sterile specimens. 



I am equally in doubt as to the propriety of mentioning 

 this species under the subgenus Schizophycus J. Ag. although it 

 undoubtedly stands nearer to Sargassum patens var. Schizophylla 

 than to any others. The present arrangement is a provisional 

 one until we shall have the good fortune of examining the 

 embryonal stages of the frond. 



Localities: Loochoo (Wright, Harvey), (K. MiYAkE)(!); 

 Misaki (h.s.a.) (!); Shima Prov. (h. Hiroshima high. norm. sch.)(!), 



Sargassum patens Ag. 



^ Plate VIII. 



Ag.: Sp. p. 47.— 7^.: System. p.'_ 303.— J. Ag.: Spec. I. p. 288.— /d: 

 Spec. Sarg. p. 56.— /(f.: Anal. Alg. Cont. III. p. 50.— De Toni; 



