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THE BOTANICAL MAGAZINE. 



is a young stage of what I have described as Hedophyllum 

 spirale from the material collected by myself in Shiniushu Island, 

 — not far from the type locality of L. Bongardiana P. et R. A 

 specimen collected by Kjellman in Berling Island and deter- 

 mined as f. furcata Aresch., now kept in the Herbarium of 

 the Botanical Museum of Upsala, coincides verj- well with this 

 stage. The specimen is prepared with the scrolled blades as 

 much artificially spread as it was possible. 



The long-stiped form of f. palmata P. et R. agrees also 

 with what I have called Hedophyllum spirale f. kamtschatkensis. 

 This form resembles very much to Latninaria dentigera 

 KjELLM. so that Areschoug has mixed its specimen with his 

 Hafg. Bongardiana f. normalis. Cfr. Berlin Hafv. Algfl. p. 45. 

 But L. dentigera Kjellm. may be always readily distinguished 

 by the uniformly cylindrical stipe. The originals of Laminaria 

 digitata mentioned in Tange des Och. Meeres p. 352, collected 

 in Ochotsk Sea by Sawaiko and by Wosnessensky are also 

 hardly separable from this forma. The remark in Tange p. 

 352, " viele regelmassige,schmale, bandformige Lappen, deren 

 Rander nach der Basis zu spiralformig der Lange nach einge- 

 roUt waren", explains that the specimen is just on the way of 

 development to the bifurcata-stage. This may be satisfactorily 

 proved from what I have observed in Hedophyllum spirale. 



A study in the Herbarium of the Botanical Museum of 

 Upsala, shows us the ambiguity of f. tseniata Kjellm. The 

 originals of this forma are by no means uniform, some of them 

 being applicable to Laminaria longipes and others to L. Bon- 

 gardiana f. palmata P. et R. Moreover, among the specimens 

 of L. nigripes Kjellm., from the Bering Sea, there contain some 

 of this forma. The oHginals of L. txniata P. et R. and of L. 

 crassifolia P. et R., though after a careful hunting by the kind- 

 ness of Dr. Tranzschell of the Academy I was not able to find 

 them out there. Yet by the descriptions and figures of both 

 species in Illustr. Alg. and from the material collected in the 

 north Kuriles by myself, I hqjire ample reason to believe that 

 L. tseniata P. et R. is difl"erent from L. Bongardiana P. et R.. but 

 that L. crassifolia P. et R. is a voung form of the latter species. 



