364 Universiiy of California Publications. [botany 



form. Such characters as these vary so much in our Amphiroas, 

 that they are hardly good ones to establish form-characters upon, 

 much less specific. 



The AnipJiiroa corymhosa of Harvey's List (1862, p. 169), 

 represented only by fragments in the collection he received, 

 judging from his idea of that species as represented in the Nereis 

 Australis (pi. 38) may also belong to this form. As to the varia- 

 tions of this form as represented l»y Kuetzing (1858, \). 31, 

 pi. 68) they are all represented in our collections and may l)e 

 classed as subforms. The subf. laciniata is especially well 

 shown in specimens under our No. 4057. The subf. antennifera 

 occurs more or less generally, Imt usually not in any considerable 

 quantity. The subforms normalis and polyphora are not well 

 set off from one another, but are both represented in Tilden's No. 

 503 in our cojty of the American Alg». 



Amphiroa epiphlegnoides J. Agardh. 



On rocks and other algae. Prince William Sound and Sitka, 

 Alaska, Satdulers (1901, p. 442) ; Strait of Juan de Fuea, Harvey 

 (1862, p. 169). 



We do not know this species. Yendo thinks (1902. p. 715) 

 that it is quite similar to Amphiroa fiilx^rcidosa, and places it 

 provisionally under that species (our f. typica) as a synonym. 



Corallina officinalis L. 



Puget Sound, Bailey and Harvey (1862, ]). 162): Esquimalt, 

 B. C, Harvey (1862. p. 169). 



After a careful and extensive consideration of the puzzling 

 forms of Corallina of the western coast of North America, we 

 have decided that the best arrangement, for the present, at least, 

 is to place all the plants which have ecorniculate cystocarps 

 under this species as forms. We have not seen the plants quoted 

 above, and consequently place them under the species without 

 comment. 



Corallina officinalis f. typica Setchell and Gardner cornl*. 



no v. 



The plant, seemingly to be considered as the tyi)e of the 

 species, is to be distinguished ])y its more or less regularly 1)ipin- 



