272 University of California Publications. [botany 



Alaria esculenta (L.) Greville. 



Arctic Coast of Alaska, Harvey (1872, p. 463); from Kamtschatka 



to Sitka, Alaska, Postels and Buprecht, (1840, p. 11). 



The references quoted refer to this species in the old general 

 sense before the majority of the species at present described under 

 the genus had been proposed, or, at least, accepted. In all 

 probability both these references include several, or, at least, 

 other species than A. esculenta. We have been inclined to be 

 conservative in reckoning specific distinctions in this genus, but 

 find that we must present a very tentative enumeration . Professor 

 Kjellman has very kindly named a selected series of specimens 

 sent to him and we have used his suggestions and notes, even 

 farther than it is possible to state iu each particular case. 



Alaria Pylaii (Bory) Greville. 



On stones in the lower litoral and upper sublitoral zones. 

 Karluk, Kadiak Island, Alaska, W.A.S., No. 5073!; Orca, 

 Alaska, W.A.S. ami A.A.I,., 5153!; Esquimalt, B. G, Harvey 

 (1862, p. 165). 



Kjellman is inclined to refer both the Alaskan numbers quoted 

 above, to this species as represented by Greenland specimens and 

 they certainly agree with specimens from Maine which we are 

 disposed to refer to this species. Harvey's specimens are said 

 by Saunders (1901, p. 425) to have been compared by Kjellman 

 to the A. fragilis Saunders, which, in turn, seems to us to be 

 little more than a young, long-stiped form of this species. 



Alaria dolichorhachis Kjellman. 



Agattu Island, Alaska, Townsend, No. 5753! 



Two specimens, collected at the above mentioned locality, are 

 said by Kjellman, to be near to this species, but still to be sep- 

 arated from it in all probability, while the specimens referred 

 by one of us (Setchell, in Collius, Holdeu and Setchell, P. B.-A., 

 No. XLI) doubtfully to this species are referred by him to A. 

 lanceolata Kjellman. 



Alaria tenuifolia Setchell. 



Setchell, in Collins, Holden and Setchell, P. B.-A., No. 

 XLV. 1901. 



