240 University of California Publications. [bot.anv 



Family BNCOELIACEJi;. 



Desmotrichum undulatum (J. Agardh) Reinke. 



On Zoster'a marina, in a quiet cove. Near Seldovia, Cook 

 Inlet, Alaska, Saunders (1901, p. 419, under HomoBostroma 

 undulatum . ) 



This seems more like a narrow Punetaria, since according to 

 both the description and figure of Saunders the plurilocular 

 sporangia hardly project beyond the surface of the frond. 



Punetaria latifolia Greville. 



In quiet waters, floating or attached to other alga 3 . Popof 

 Island, Sitka, and Annette Island, Alaska, Saunders (1901, 

 p. 420, under Honueostroma latifolium) ; Penn's Cove, near Coupe- 

 ville, Whidbey Island, Wash., N.L.G., No. 190! 



Homeeostroma lobatum Saunders, from Sitka and Prince 

 William Sound, Alaska, seems from description and figure to 

 be a form of this species or the next with much lobed mai'gins. 

 It reminds us of Phycolapathum crispatum Kuetzing (1856, p. 16, 

 pi. 49, f. I). 



No. 190, N.L.G., may be a distinct form, since it reaches a 

 diameter of over a meter and seems to increase, in its floating state, 

 indefinitely, in a way similar to that of Ulva Lactuca var. 

 latissima. 



Punetaria plantaginea (Roth) Greville. 



On exposed rocks. Port Clarence, Alaska, Kjellmcm (1889, 

 p. 50); Yakutat Bay, Alaska, Saunders (1901, p. 420). 



Coilodesme bulligera Stroemfelt. 



On rocks and stones, in quiet coves, in the lower literal zone. 

 Amaknak Island, Bay of Unalaska, Alaska, W.A.S. and A.A.L., 

 Nos. 3285! , 4081! , and in Collins, Holden and Setchell, P. B.-A., 

 No. 923b!; Shumagin Islands, Kukak Bay, Prince William 

 Sound, Yakutat Bay, and Wrangell, Alaska, Saunders (1901, 

 p. 422) , and in Collins, Holden and Setchell, P. B.-A., No. 923a! ; 

 west coast of Whidbey Island, Wash., X.L.G., No. 201! 



It is very interesting to note the common occurrence of this 

 species in the Northern Pacific Ocean, at least so far as the 

 North American Coast is concerned, since before the collections 



