282 University of California Publications. [botas* 



Fucus evanescens f. typica Kjellman. 



On rocks, upper litoral zone. Harvester Island, Uyak Bay 

 Kadiak Island, Alaska, W.A.8. and A.A.L., No. 5122! 



The specimens referred here are the only ones we have seen 

 from our territory, which agree thoroughly with the plate of 

 Agardh (1821, pi. 13). 



Fucus evanescens f. limitatus Kjellman. 



In the sublitoral zone. Port Clarence, Alaska, Kjellman 

 (1889, p. 34); Besboro Island, Norton Sound, Alaska, B. G. 

 McGregor, No. 5683! 



We refer the plant from Besboro Island to this form with 

 some considerable doubt, since there is only the description to 

 guide us. In general shape and size of the frond, and shape of 

 the receptacles, it seems to agree better than with any other form 

 so far described. 



Fucus evanescens f. rudis Kjellman. 



On rocks in the sublitoral zone. Harvester Island, Uyak 

 Bay, Kadiak Island, Alaska, W.A.8. and A.A.L., No. 5121! 



As we understand this form, it differs from f. typica by its 

 narrower, more linear frond, and more pointed receptacles. It 

 grew near the plants referred to the typical form, but in a dis- 

 tinct patch, with a somewhat different aspect. 



Fucus evanescens f. macrocephalus Kjellman. 



On stones, upper litoral zone, in quiet waters. Cape Dyer, 

 Alaska, Newhall and Rhodes, Nos. 5791!, 5792!; east shore of 

 Ainaknak Island. Bay of Uualaska, Alaska, B. C. McGregor, No. 

 5689!, 11'.. 4.*. and A.A.L., No. 4077!; Shumagin Islands, 

 Kukak Bay. Cook Inlet, Prince William Sound, and Glacier Bay, 

 Alaska, Saunders (1901, p. 432) ; Skaguay, Alaska, A. L. Bolton ! 

 (young) ; Sitka, Juneau, Wrangell, and Annette Island, Alaska, 

 Saunders < 1901 , p. 432) ; Whidbey Island, Wash. , N.L.G., No. 89 ! ; 

 Tracyton, Kitsap County, Wash., Tilden, No. 235! 



Some of the specimens quoted above are referred here with 

 doubt, but the greater part of them agree well with Kjellman 's 

 description and with the plate of Saunders (1901, pi. 72", f. 1). 



