vol.i] Setchell-Gardner. — Alga of Northwestern America. 285 



Fucus evanescens f. nanus Kjellman"? 



Yakutat Bay. Alaska, Rev. Albin Johnson, No. 5712! (sterile) . 



A dwarf, slender, irregularly branched form, referred here 

 doubtfully ou account of its sterile condition. 



Fucus evanescens f. bursiger (J. Agardh) Kjellman. 



On rocks at extreme upper tide limit. Summer Bay, Unalaska, 

 Alaska. W.A.S.andA.A.L.,No.'4:052\ ; DutchHarbor, Unalaska, 

 Alaska, R. G. McGregor, No. 5689a! ; Whidbey Island, Wash., 

 X.L.G.. No. 90! 



A depauperate form of the uppermost portion of the litoral 

 zone, agreeing with the description and figure of J. G. Agardh 

 (1870a. p. 35, pi. 3). 



Under Fucus evanescens are probably to be placed the older 

 references to the occurence of F. vesiculosus, a species lacking, 

 in all probability, on our western coast. Most of the references 

 state that the species is represented by the form without vesicles. 

 The following are to be noted: 



F. vesiculosus Postels and Ruprecht (1840, p. 12). Sitka, 

 Alaska. 



F. vesiculosus var. minor Harvey (1841, p. 134). Kotzebue 

 Sound, Alaska. 



F. vesiculosus Bailey and Harvey (1862, p. 160). Puget 

 Sound. 



F. vesiculosus var. evesiculosus Harvey (1862, p. 163). 

 Esquimalt and Victoria, B. C. 



F. vesiculosus Harvey (1872, p. 463). Kotzebue Sound, 

 Alaska. 



Family SARGASSACE^E. 



Cystophyllum geminatum ( Agardh) J. Agardh. 



On rocks, in sheltered places, lower litoral and upper sub- 

 litoral zones. Bay of Morozof (Morzhovoi Bay), Alaska, Town- 

 send, No. 5778!; Shumagin Islands and Kukak Bay, Alaska, 

 Saunders (1901, p. 432, under G. Lepidium); Kadiak Island, 

 Alaska, Ruprecht (1851, p. 348, under Gystoseira thyrsigera); 

 Yakutat Bay, Sitka, and Wrangell, Alaska, Saunders (1901, p. 



