286 University of California Publications. [botany 



432, under G. Lepidium) ; Banks Island, B. C, Harvey (1857, p. 

 122); Victoria, B.C., Saunders (1901, p. 432, under G. Lepidium); 

 in 14 fathoms, Esquimalt, B. C, Harvey (1862, p. 163); Port 

 Renfrew, B. C, Butler and Polley, Nos. 19, 103; west coast 

 of Whidbey Island, Wash., N.L.G., No. 36!, in Collins, Holden 

 and Setchell, P. B.-A., No. XLVII! , under G. Lepidium- Friday 

 Harbor, San Juan Island, Wash., Tilden, No. 232!, under C. 

 Lepidium. 



Five species are quoted from the coasts ranging between the 

 Ochotsk Sea and Puget Sound, viz., Oystoseira geminatnm 

 Agardh, C. thyrsigera P. & R. , G spicigera Mertens and Agardh, 

 C. Lepidium Ruprecht, and G. hypocarpa Kuetzing. It is ques- 

 tionable whether there are characters to separate them from one 

 another and it has seemed necessary to place them all under one 

 name for the present. G. spicigera, however, is said by Ruprecht 

 (1851. p. 348) not to represent without emendation, any certainly 

 known species, and consequently, although this name is the old- 

 est, it seems best not to adopt it because of the uncertainty. 

 From the descriptions and figures it certainly seems that G. 

 thyrsigera. G. Lepidium, and C. hypocarpa, refer at least, to forms 

 of the same species and are to be united. The identity of C. 

 thyrsigera and G. geminatum rests on the authority of J. G. 

 Agardh. 



Cystoseira osmundacea (Mcnzies) Agardh. 



Sannak Island, Alaska, Turner (1886, p. 85). 



This is the only reference to this common Californian species 

 as occurring within our limits. It is to be questioned as to 

 whether it may not be the preceding species masquerading under 

 this name. 



RHODOPHYCB^. 



The Rhodophycea? of the Northwest Coast are more numerous 

 than had been supposed until within a few years, and form a 

 group which has taxed our efforts to the utmost. The abundant 

 materials collected in our hands has presented to us a large 

 number of problems of identification which we trust we have 



