132 THE BOTANICAL MAGAZINE. [Vai.xxiu.Xo.hu 



J. AG.: Spec. Alg. II. p. 357.— Id:: Epicris. p. 259— De Toni : Syll. 

 Alg. IV. p. 605.— Saund.: Harr. Alask. Exped. Alga;, p. 436. 



=Dumontia firma P. et R.: Illustr. p. 19, Tab. 35. fig. B., Tab. 

 40. fig. 82-83— Kutz.: Spec. Alg. p. 720. 



= Halosaccion Hydruphora J. Ac: Spec. Alg. II. p. 358. ex part. 



=Fucus saccatus Turn : Hist. Fuc. IV. Tab. 241. fig. d. dextra. 



As above stated the present species is abundantly found on 

 the eastern coast of Hokkaido as well as along the coast of the 

 Kurile Islands. It is characterized by having robust texture 

 than H. Hydrophora, and long attenuated stipe. At the end of 

 August, in the southern Kuriles, the frond is torn away from 

 a point above the Stipe, leaving a small portion of frond. In 

 the next February— March, several new buds are given rise from 

 the top and the margin of the remaining part of the frond. 

 The older part becomes, in most cases, much thicker, flat, and 

 solid in this season. The figures of H. ratnetaceuw f. robusta 

 in Kjellman's Alg. Arct. Sea. PI. 12, fig. 4 and PI. 13, fig. 

 2 illustrate the same respects. I could not see any saccate larg- 

 specimen with proliferations as shown in Illustr. Alg. Tab. 35. B. 



Loc. Nemuro ; Kunashiri Island and its northern Kuriles. 



> Rhodcmela lycopodioides Ag. f. tenuissima Kjellm. 



Alg. Arct. Sea. p. 109.— Setch. et Gard.: Alg. N. W. Amer. p. 

 332— Kjellm.: Beringhafvets Algfl. p. 24. 



=Fuscaria tenuissima Rxjpr.: Tange. p. 221, Taf. 10. 



Gobi, J. Agardh, Falkenberg, etc., seem to hold the view 

 that R. lycopodioides Ag. shall be combined with R. subfusca 

 Ag., while Kjellman denies it, pointing out the differences 

 between the two. I can not enter into the discussion much 

 about it. I simply mention here that we have a plant within 

 our boundary that comes pretty well in coincidence with the 

 descriptions and illustration of the above mentioned forma. 



In our material, the stichidia are moniliform in the similar 

 manner as is shown in Harvey's Ner. Bor.-Amer. PI. XIII. fig. c, 

 under R. gracilis. 



Loc. North Kuriles. 



