A Monograph of the Genns Alaria. 131 



Species Doubtful. 



Laniinaria niiisœfolia De la P\'l. 



Flora Terre Neuve, p. 31. 



I have not seen any reliable authentic specimen of this species. 

 In the Agardhian Herbarium at Lund there is a fragment of 

 Alaria collected in Newfoundland and sent from De la Pyl under 

 Laminar ia musœfoJia. It is a part of the blade, cut off on both 

 ends, without si)orophyll or any other part which shows the 

 specific characters. 



In Grönlands Lam. och Fucaceer, p. 23, J. Agaedh refers to 

 the descriptions of Alaria by various former w^riters under Alaria 

 muscefolia J. Ag., but mostly with ample doubts. Judging from 

 the specimens in the Agardhian Herbarium, J. Agaedh's specific 

 conception of A. muscefolia J. Ag. seems to be very uncertain. 

 Several of them from the Atlantic coast of North America appear 

 to be satisfactorily identified with A. Pijlaii Grev. and one from 

 Spitzbergen is, in my opinion, to be determined as A. dolichorhachis 

 Kjellm. 



In Fertihzer Resources of the United States, p. 163, Setchell 

 mentions A. muscefolia J. Ag. in an independent specific rank and 

 assigns it to the Atlantic coast of North America, from Newfound- 

 land to Maine. This may perhaps mean a form which is treated 

 in the present Monograph under A. Pylaii Geev. 



In Spetzbergens Thallophyter, II, p. 12, Iviellman remarks:— 

 " Mellan A. esculenta och muscefolia är skillnaden icke betydlig." 

 This is probably the ground on which he reduced Laminaria 

 muscefolia De la Pyl to a forma of A, esculenta Geev. But what 

 he understood by L. muscefolia is not very clear to me. The typo 



