101 



la/icosta Kjellm. and to A. lanceolata Kjellm. may bc closer than 

 may appear until it can be compared with authenlic specimens. 



Alaria tenui/olia Setchell was distributed under this name ad 

 interim, under N. XLIV of the Phycotheca Boreali-Americana, in 

 1901. On the label was only a mention of the distinctive points of 

 the species, but with sutpcient data to distinguish the species from 

 those of the genus already known. It was later more fully described 

 and illustrated in the Algae of Northwestern America (p. 272, 273, 

 pi. 22) where it was compared with A. Pylaii (Bory) Greville and 

 A. fragìlìs Saunders, from the former of which it is amply distinct 

 on account of its very much flattened stipe. On the other hand, an 

 examination of Saunders 1 s specimens in Herb. Farlow indicates that 

 there exist no essential differences between the two species. I have 

 compared A. tenuìfolia with the type specimens of A. membranacea 

 in Herb. J. G. Agardh, and while the latter are far from satisfying, 

 it seems that A. tenui/olia approaches A. membranacea fairly closely 

 but that its stipe is much more flattened than seems to be the case 

 in the type of Agardh. Saunders says that Kjellman compares his 

 plant with the A. Pylaii of Harvey's Vancouver plant (cfr. Proc. 

 Linn. Soc, Botany, voi. ó, p. [65, 1862), a plant considered by 

 Kjellman to be different from the A. Pylaii of the Atlantic. I found 

 only two specimens of A. Pylaii from Vancouver Island in Herb. 

 Harvey, and they seemed exactly like young specimens of A. tenuì- 

 folia, but were too young to make certain. 



Ecklonia radiata (Turn.) J. Ag. is credited to the coasts of Ca- 

 lifornia principally upon the authority of Areschoug (cfr. Obs. Phyc, 

 pt. 5, p. i3, 1884). There exists no reasonable doubt but that, as 

 suggested by the writer (cfr. Setchell, Erythrea, voi. 4, p. 43, 1896), 

 the reference is founded on a young plant of Eisenia arborea Aresch. 

 In Herb. J. E. Areschoug in the Royal Swedish Academy at Stock- 

 holm, I found a single Californian plant labelled « Ecklonia radiata » 

 and also « Calif, Sta. Catalina, Dr. Eisen » undoubtedly the originai 

 of Areschoug' s reference and cqually undoubtedly a young plant of 

 Eisenia arborea. 



