222 University of California Publications . (botany 



Ch. tortuosa to Iris own Ch. I it area and this is as far as any 

 information concerning the plant from Sitka is known to us. 



Chaetomorpha tortuosa (Dillwyn) Kuetzing. 



"Parasitic" on Ch. melagonium. Unalaska, Alaska, Rupreckt 

 (1851, p. 397, under Conferva confervicola).. 



Harvey (1857, p. 88) sa.ys that he has received a specimen of 

 the Conferva confervicola Ruprecht from Ruprecht himself and 

 cannot distinguish it from the present species. It seems, also, 

 that the Conferva Li mini of Postels and Ruprecht (1840, p. 22) 

 may belong with it, since they mention that the specimens 

 referred to that species and collected at Sitka, are only half as 

 thick as European specimens of Ch. Linton (Mueller) Kuetzing 

 Another possibility seems likely to us, and that is that the speci- 

 mens quoted here may also be identical with what Mr. Collins 

 and Kjellman have referred, of North Pacific forms, to Ch. ccm- 

 nahina. mentioned above. 



Chsetomorpha melagonium (Weber et Mohr) Kuetzing. 



In tufts over two feet long. Unalaska and Kadiak Islands, 

 Alaska, Ruprecht (1851, p. 397, under Conferva Melagonium) . 



Chaetomorpha melagonium f. typica Kjellman. 



In the sublitoral zone. St. Lawrence Island and Port Clar- 

 ence. Alaska. Kjellman (1889, p. 55); St. Paul Island, Alaska, 

 Greeley ami Snodgrass, No. 5785a! (Setchell, 1899, p'. 590). 



Chaetomorpha melagonium f. rupincola (Areschoug) Kjellman. 

 Vakutat Bay, Alaska, Saunders (1901, p. 413). 



Rhizoclonium riparium f. implexum (Dillwyn) Rosenvinge. 

 On roots, mud, stones, etc.. literal zone. St. Michael, Alaska, 

 W.A.S., Nos. 5241!, 5244!; east shore of Amaknak Island, 

 Bay of Unalaska, Alaska, W.A.S. and A.A.L., No. 4006!; 

 Yakutat Bay, Alaska, Saunders (1901, p. 414); Departure Bay, 

 B.C., W.A.8. and A.A.L., No. 5210!, and in Collins, 

 Holden and Setchell, P. B.-A., No. 976!; Peddler Inlet, Strait 

 of Juan De Fuca, Vancouver Island, B. C, Tilden, No. 379! 

 (under Rh. riparium) ; Whidbey Island, Wash., N.L.G., Nos. 

 296!, 414! ; San Juan Island, Wash., W.L.G., No. 205! 



