88 Vol. XLIII.. Art. 1.-K. Yendo: 



and the shape of the base of the blade may be taken as the dis- 

 criminatmg characters. 



Remarks on the synonyms. Among the specimens under Phas. 

 alalum var. latifolium Rupk., preserved in the Academy of Science 

 of Petrograd, there are some from Javina, Kamtschatka. These 

 differ greatly from the rest by having leather-like blades and much 

 aggregated sporophylls. Judging from Rupeecht's handwriting on 

 the specimen sheet, he seems to have had ample doubt on the 

 determhiation and to have at first supposed them to be a young 

 stage of Phas. marginatum Rupr. But I am inclined to consider 

 them to be referrablo to the present species. The Petropaulowsk 

 specimen of A. escidenta P. et R. as treated in Illustr. Alg., p. 11, 

 also seems to be joined here. 



The plant distributed as Phyc. Bor.-Amer., Faso. B., No. 

 XLIV, was at first hesitatingly identified with A. lanceolata by 

 Setcheli.. He^) referred it later to A. marghiata P. et R. The 

 specimen in the copy I have seen was provided with compara- 

 tively few sporophylls set apart at regular intervals in the main 

 part, some younger ones being aggregated at the upper. The 

 shape and substance of the sporophylls, as well as the arrange- 

 ment on the stipe, recalled more of A. prœlomja Kjellm. than any 

 other species. It is to be questioned how Seïchell comprehended 

 A. prcelonga Kjellm. The informations concerning this species in 

 Algae of tlie Pribilof Island, p. 529 and in Algae of the North- 

 western Coast of Nor til America, p. 274, are therefore not referred 

 to here. 



Locality. Javina, Kamtschatka (Ruprecht) ; Petropaulowsk, 

 Kamtschatka (Postées and Ruprecht) ; Bering Islands (Kjellman) ; 

 South-eastern coast of Hokkaido, Japan (Herb. 8. A. C). 



V) Setchell : Critical Notes on Laminariacea^, p. IL 



