322 University of California Publications. [hotanv 



Delesseria sinuosa (Goodenough and Woodward) Lainouroux. 

 Arctic coast of Alaska, Harvey (1872, p. 468); Agattn 

 Island, Alaska, Toumsend, No. 5764! ; shores of {\\v Bay of 

 Unalaska, Alaska, Tr.^.*S'. and A.A.L., Nos. 3274!, 4038!, 

 4()64a!, 5005!; Slnimagin Islands, Alaska, Saunders (1901, p. 

 437); Karluk, Kadiak Island, Alaska, ir.A.xS'., No. 5063!; 

 Cormorant Rocks, Uyak Bay, Kadiak Island, Alaska, W.A.S. 

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

 Sitka, Alaska, /«»V<«/^fZfr6' (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 tetraspores 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 T). quercifolia but with a more distinct midrib and opposite 

 nerves." I), giiercifolia, however, has a fairly distinct midril) 

 and the nerves are opposite. 



Deiesseria sinuosa f. lingulata Agardh. 



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

 (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. 



Deiesseria crassifolla Ruprecht. 



St. Paul Island, Alaska, Buprerhi (1851, p. 232), Farlon- 

 (1886, p. 473), Toumsend, No. 5779!, Greeley and Snodyniss, 

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



A fine large species and apparently commonly cast ashore at 

 St. Paul Island in the Pribilof grouj). It seems close to 

 D. Middendorfii Ruprec^ht, ))ut is less ])r()]ifVrous from tlie 

 costa. 



