THE FUCACEiE OF JAPAN. 91 



having done so is not clear to nic. Judging from the original 

 diagnosis, Harvey's plant seems to be a form referable either 

 to Sargassum serratifoUum or to Sarg, ioriile, with the fulcrant 

 leaves off. Prof. Wright wrote me wlien I asked for a photo- 

 graph of Harvey's original specimen, that he could not find 

 any bearing that name in the herbarium of Trinity College. 



Garimcanthus trichophyllum KÜTZ. seems extremely doubtful to 

 me. De Toni^^ has placed it under the questionable species. It 

 has exactly the same characters as Sargassum tortile except that the 

 receptacles are "ad angulos spinoso dentata." So far as my 

 researches on the Japanese forms of Sargassum extend, I can 

 not believe such a species occurs on our coast. The plant which 

 KÜTZING had illustrated was probably a specimen of the present 

 species with shrunken receptacles apparently angulate. 



Fucus heterophyllus is assigned to Japan by Turner"^ J. 

 Agardh^^*^ seems to doubt its occurrence in Japan, which is reason- 

 able, and mentions it under Sargassum siliquastrum. The figures 

 delineated by Turner are incomplete ; they are referable to Sargassum 

 serratifoUum or rather to Sarg, tortile. He remarks, however, 

 of the receptacles : ** some solitary, others growing two or three 

 together," — which is not a character of the present species. 



J. Agardh^^ referred Fucus longifolius j angustifolius Turn. 

 to the present species. But Turner's original description and 

 illustration may at once be applied to both Sargassum serrati- 

 foUum and this species. It may not be possible to solve the 

 problem before seeing Turner's original specimen. 



1) Syll. Alg. Iir. p. 118. 



2) Hist. Flic. Vol. II. 1). 02. 



3) Spec. Alg. I. p. 29:i. 



4) Spec. Sarg. Austr. p. CO. 



5) Spec. Alg. I. p. 291. 



