(JS AET. 12. — K. YEXDO. 



portions of Sargasmm ^JtY-w/'i/ei'w^i^. A specimen from Tsushima 

 Island, preserved in the herbarium of the Sapporo Agricultural 

 College, has the upper leaves almost capillaceous. Kuntze^^ 

 notes that Halochloa Schizophylla is an abnormal young form of 

 Sargassum 2y^luliferum. This is probably derived from such 

 partial similarity. 



J. Agaedh, Martens and others agree in the opinion that 

 Halochloa Schizophylla Kxjtz. is hardly separable from Sargassum 

 2Xttens Ag. Martens'-' observes that the former is nothing but a 

 young individual or a lower part of the latter species. As has 

 been stated above, the difference between the type and the variety 

 is already perceptible in the young shoots. 



Remark on the synonymy. As has been stated in the pre- 

 ceding chapter, the original definition of Sargassum jnnnatißdwn 

 given by Harvey is satisfactorily applicable to var. Schizophylla. 

 J. Agardh^^ recognized the close affinity between Harvey's 

 species and Sargassum païens Ag. He mentioned, however, 

 Sargassum jnnnatißdum Harv. as an independent species as it 

 differed to some extent from the type form of Sargassum patetis 

 Ag. It is much to be regretted that the eminent algologist did 

 not happen to compare it with the variety. 



Sargassum Rodgersianum is also a species established by 

 Harvey. The original diagnosis is so very brief that we can 

 hardly grasp the exact character of his plant. J. Agardh 

 mentions the species in Anal. Alg. cont. III. p. 54. But judging 

 from the remark made by him in that paper, and from the fact 

 that he mentioned it under the subgenus Bactrophycus it is 



1) Kuntzk: Revisio von »Sarg. p. 227. 



2) Martens: Preus. Exped. Tange, p. 116. 



3) Anal. Alg. Cont. III. p. 54. 



