vol. ii Seichell— Gardner. — A.lgce of Northwestern America. 301 



Gigartina Pacifica Kjellmau. 



On rocks in the upper part of the sublitoral zone. Shumagin 

 Islands. Alaska, Saunders (1901, p. 435). 



The type plant is from Bering Island where Kjelhnan says it' 

 is fairly common. He says that it has proliferations from the 

 disk as well as from the margins, but his figures show those from 

 the disk only sparingly. As has been stated above, we have 

 plants from Unalaska which agree well with Kjellman's descrip- 

 tion and figure, but the cystocarp is decidedly that of Chondrus 

 and we have referred them to forms of G. crispus. We have not 

 seen the specimens of Saunders. Near this plant, whatever its 

 disposition, are probably to be placed Ruprecht's (Jhondrus 

 mamillosiis var. Ochotensis and C. mamillosus var. Unalaschensis 

 (18-51, pp. 318 and 319). The description of the latter seems to 

 point directly to Kjellman's plant, while the former is a more 

 slender plant. In both, the papilla? are confined to the margins 

 and ends, and point towards forms of G. crispus, to which we feel 

 inclined to refer all three plants under discussion. 



Gigartina mamillosa (Goodenough and Woodward) J. Agardh. 

 We have long been of the opinion that the forms of Gigartina 

 of the western coasts of North America commonly referred to 

 G. papillata (Agardh) J. Agardh, are merely forms of the species 

 of Europe and it has seemed safe to refer them under it in this 

 paper. The type as outlined by Goodenough and Woodward ( 1795, 

 p. 174) seems to be a form similar if not identical with our f. 

 cristata. This species is given as from Unalaska and Sitka by 

 Postels and Ruprecht (1840, p. 17). 



Gigartina mamillosa f . cristata Setchell comb, no v. 



On rocks in the literal zone about half way between tide 

 marks. Kukak Bay, Alaska, Saunders (1901, p. 435, under 

 G. papillata f. cristata); Orca, Alaska, W.A.S. and A.A.L., 

 No. 5157!; Esquimalt, B.C., Harney (1862, p. 172, under G. 

 mamillaris f. latissima); west coast of Whidbey Island, Wash., 

 X.L.G., Xos. 67!, 77!, 195!; Tracyton, Kitsap County, Wash., 

 Tilden, No. 219!, under G. radula and No. 326!, under G. papil- 

 lata f. cristata. 



