302 University of California Fablications. [Botany 



Gigartina mamillosa t. cristata subf . prolifera Setchell and 

 Gardner snbf. no v. 



On rocks in the litoral zone. Oroa, Alaska, ir.A.N. and 

 A.A.L., No. 51G7! ; Yakutat Bay, Alaska, Eev. Albiii Jolnison, 

 No. 5707! ; Trae.yton, Kitsap County, Wash., Tihlen, No. 220!, 

 under (/. hianii/losa. 



This differs from the preceding by the papilltp being produced 

 into lanceolate blades. It is merely a sterile foliiferous state of 

 the preceding, but is of common occurrence on the coast of 

 California in waters containing a considerable admixture of fresh 

 water. 



Gigartina mamillosa f. dissecta Setehell com]), nov. 



Esquimalt, B. L'., H((rt'ei/ (18G2, p. 172, under G. nianii/laris 

 f . vulgaris) . 



This seems to be the same as G. papiUata f. dissecta Setchcll. 



Gigartina mamillosa f. subsimplex Setchell comb. nov. 



On rocks in the upper litoral zone. Captains Bay, Unalaska, 

 Alaska, W.A.S. and A.A.L., No. 5013! ; Shumagin Islands, 

 Alaska, ISannders (1901, p. 434, under G. papillata f. ti/pica); 

 Harvester Island, U.yak Bay, Kadiak Island, Alaska, ir.A.iS'. and 

 A.A.L., No. 5114!; Sitka, Alaska, Ruprechf (1S51. j). 318, 

 under Chondrus mamillosus var. Sitchensis) . 



This is the type of C. A. Agardh's G. papillata, the type speci- 

 men of which was collected by Chamisso. Chamisso labelled the 

 plant as coming from Oahu, one of the Hawaiian Islands, but as 

 Ruprecht (1851, p. 318) remarks, it probalily came from 

 Unalaska. It is G. papillata f. snhsiniplfx Setchell. 



Gigartina radula f. typica Setchell. 



On rocks lower litoral and upper sublitoral zones. Puget 

 Sound, Bailey and Harvey (1862, p. 162); Strait of Juan de 

 Fuca and Victoria, B. C, Harvey (1862, ]). 172) : Port Renfrew, 

 B. C, Butler and Polley, No. 73; west coast of Whidbey Island, 

 Wash., N.L.G., No. 175! 



With the exception of Gardner's specimen, we assume that 

 the references quoted belong to the typical form of this si)ecies. 

 Gardner's specimen is near the type, but not exactly ('oi'rcsi)onding. 



