322 University of California Publication*. [Botany 



Delesseria sinuosa (Goodenough and Woodward) Lamouroux. 



Arctic coast of Alaska, Harvey (1872, p. 463) ; Agattu 

 Island, Alaska, Townsend, No. 5764! ; shores of the Bay of 

 Unalaska, Alaska, ir..4.»S'. and A.A.L., Nos. 3274!, 4038!, 

 4064a!, 5005!; Slramagin Islands, Alaska, Saunders (1901, p. 

 437); Karluk, Kadiak Island, Alaska, W.A.S., No. 5063!; 

 Cormorant Rocks, TJyak Bay, Kadiak Island, Alaska, W.A.8. 

 and A.A.L., No. 5134! ; Kukak Bay, Prince William Sound, and 

 Sitka, Alaska, Saunders (1901, p. 437). 



The specimens examined by us, of those enumerated above, 

 show more or less proliferation, and in most cases, they are 

 eroded to the costa and ribs which are bare or nearly bare of 

 blade, but covered with smaller or larger proliferous leaflets. 

 Unfortunately, none of the specimens have either tehaspores or 

 cystocarps, and consequently we cannot be so certain as to the 

 specific determination as we desire. Our specimens are placed 

 here on account of the tendency to proliferate. We do not feel 

 certain of Saunders's conception of the species, since he says 

 (loc. cit.): — "a very variable species, some of the forms resem- 

 bling I>. quercifolia but with a more distinct midrib and opposite 

 nerves." I), quercifolia, however, has a fairly distinct midrib 

 and the nerves are opposite. 



Delesseria sinuosa f. lingulata Agardh. 



Upper sublitoral zone. St. Lawrence Island, Alaska, Kjellman 

 (1889, p. 25). 



Kjellman found the f. typica at Bering Island Siberia, and 

 these specimens bore cystocarps, while the St. Lawrence Island 

 specimens bore tetrasporangia. 



Delesseria crassifolia Etuprecht. 



St. Paul Island, Alaska, Ruprecht (1851. p. 232), Farloio 

 (1886, p. 473), Townsend, No. 5779!, Greeley anil Snodgrass, 

 No. 5803! (Setchell, 1899, p. 594), Saunders (1901, p. 437). 



A fine large species and apparently commonly east ashore at 

 St. Paul Island in the Pribilof group. It seems close to 

 />. Middendorfii Rirpreehfc, but is less proliferous from the 

 costa. 



