A Monograph of tlie Genus Alaria. 91 



The specimen No. 2101, alluded to above, in the Agardhian 

 Herbarium, was collected at Spitzbergen during the Torell Expedi- 

 tion and was compared by J. Agakdh with Laminaria mnsœfoUa 

 De la Pyl. In Bidrag till Kännedomen af Spetzbergens Alger, 

 Tillägg, however, J. Agardh does not give any acconnt on this 

 specimen. He simply mentions two species of Alaria therefrom, 

 A. Pi/Iail and A. esculenta, in the collection of the expedition. It 

 is quite certain that the specimen mentioned has been treated as 

 A. PyJaii in the Bidrag. This specimen is decidedly not applicable 

 to A. Pylail Geev. It agrees very well w^ith the figure of A, 

 elUptica in Alg. Arct. Sea, Plate 23, fig. 2, but in a little more 

 advanced stage. A still slightly more advanced stage of this 

 specimen is excellently represented by the co-type of A. eUiptim 

 JQst mentioned above. 



In the Herbarium of the Botanical Museum of Upsala, there 

 are two specimens as the typo of ^4. dollchorhachis IvJEixii. A 

 third specimen collected by Setchell in Unalaska Bay is annexed 

 to them, determined by Kjellman, but with a question mark. These 

 three belong undoubtedly to one and the same species. I can not 

 find any reason to treat them specifically distinct from the speci- 

 mens of A. elUptica found in the Agardhian Herbarium. Kjellman 

 himself observes a close affinity between A. cUiptica, A. dolicho- 

 rhachis and A. prœlojiga.^') The last mentioned species, however, is 

 sharply distinguished from them. The descriptions of the other 

 two can hardly give us the distinctions justifying their separation 

 specifically. The describer emphatically states that the peculiarity 

 of the shape of the blade of A. elUptica is its unique character. 

 An examination of the type of A. cloHchorhachis, in comparison 

 wâth the co-type of A. elUptica, and considering the variation of the 



1) Kjellman : Algae Arct. Sea, p. 222. 



