280 Universiti/ of Culifornia Fuhlicaiions . ibotanv 



Family FUCACE.5^. 



Fucus inflatus (L.) Vahl. 



The present species has been the subject of considerable 

 research on the i)art of the Scandinavian Algologists and the 

 latest study is contained in the very recently issued work of 

 Borgesen (1902, pp. 405-472). The account of Borgesen seems 

 to the writers to deal most satisfactorily with the forms of the 

 west coast of North America usually included under the name 

 of Fhcus furcatus Agardh and will consequently be f-ollowed 

 by us. The form usually classified under Agardh 's name does 

 not agree with the type figure (Agardh, 1821, pi. 14), which is 

 a smaller and less perfectly developed i)lant, as Borgesen has 

 pointed out (loc. cit., p. 46")), and a transitional form between 

 two distinct forms. 



Fucus inflatus f . edentatus (De la Pylaie) Rosenvinge. 



Attached to rocks at low water mark. Mctoria, B.C., Tildeu , 

 No. 284, under F. fuycdixsl ; west coast of Whidbey Island, 

 Wash., X.L.G., No. 91! 



No. 91 is a large broad typical plant, agreeing well in every 

 character with the F. fdeufntus of the New England coast. No. 

 234 is still typical but not quite so well developed. The type of 

 F. furcatus seems to represent a dwarfed and not sjTnmetrically 

 developed form and is said by Agardh to have been collected at 

 Unalaska by Chamisso. One of us has searched very carefully 

 in the region of the Bay of Unalaska for it, but has failed to find 

 any trace of it, and Ruprecht (1851, p. 346) says that the origi- 

 nal specimen came, not from Unalaska, but from Fort Ross in 

 California where it is common. Kuetzing's figure (1860, pi. 17, 

 TI), which is seemingly from the original material of F. furcatus, 

 although small, is typical of the f^doitatus form. Harvey (1862, 

 p. 163) refers specimens from Esquimalt doubtfully to F. furcatus. 



Fucus inflatus f. linearis TCKder) Rosenvinge. 



Fairhaven, Wash., y.L.G., No. 189! 



To this form, we have referred some specimens which agree 

 fairly well with the preceding form, l)ut ai-e much narrower. 

 The plants are about 15 cm. high and 3 nun. wide, while the 



