vor,. i| ISefcheU-Gardner. — Algd- of Xorfhwesfern America. 301 



Gigartina Pacifica Kjellman. 



On rocks in the npper part of the sublitoral zone. Shnmagin 

 Islands, Akiska, Saunders (1901, p. 485). 



The type plant is troni Bering Island where Kjellman says it 

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

 disk as well as from the margins, bnt 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, l)ut the cystocarp is decidedly that of C-hondrus 

 and we have referred them to forms of C crispKs. We have not 

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

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

 iitiiiinllosKs var. (hdioff-iisis and C. maniillosus var. ITnalaschciisis 

 (1S51, 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. rrispiis, to which we feel 

 inclined to refer all three jdants under discussion. 



Gigartina mamillosa ((Joodenough 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 Ruin-echt (1S40, p. 17). 



Gigartina mamillosa f. cristata Setchell comb. nov. 



On rocks in the litoral zone about half way l)etween tide 

 marks. Kukak Bay, Alaska, Satniders (1901, ]). 435, under 

 G. papiUafa f. rrisfafa); Orca, Alaska, ir.A.N. and A.A.L., 

 No. 5157!; Esquimau, B.C., Harrey (1S62, p. 172, under C/. 

 niamiUaris t. latissima) ; west coast of Whidliey Island, Wash., 

 N.L.G., Nos. 67!, 77!, 195!; Tracyton, Kitsap County, Wash., 

 Tildeii, No. 219!, under (/. radiiJa and No. 326!, under G. papil- 

 la fa f. cristata. 



