Vol.1] Setckell-Gardiier . — Algn' of jSoriJuvedern America. 209 



beeu examined belong to Rosenvinge's var. fi/pica. No. 531 is 

 the form known as M. Blyttii. 



Monostroma fuscum var. splendens (Rnpreeht) Rosenvinge. 



On stones in the middle litoral zone. St. Panl Island, Alaska, 

 I'oii'jhsend , No. 5785!, Greeley and ISnodgrass, No. 5800! (ef. 

 Setehell, 1899, nnderil/. splendens); west shore of Amaknak Island, 

 Bay of Unalaska, Alaska, ir.A.N. avd A.A.L., No. 8261!, and 

 in Collins, Holden and Setehell, P. B.-A., No. 911! ; Pinnacles, 

 near Snmmer Bay, Unalaska, Alaska, A.A.L., No. 4097! ; Lowe 

 Inlet, Alaska, Saunders (1901, p. 409, nnderTI/. splendens). The 

 variety, which is the original Ulva or Ulvaria splendens Rnpreeht, 

 is to he distingnished from the var. li/jiica, according to Rosen- 

 vinge, by the thickened external wall. 



Monostroma leptodermum Kjellman. 



Forming a dense growth on Zostera, in shallow watei-. 

 Between Brown and San Jnan Islands, Wash., Tilden, No. 388!, 

 under Monostroma zostericolnm . 



Mr. Collins reports that this is the same plant as found grow- 

 ing on the New England coast and listed by hhn (1900, \^. 44), 

 and that it agrees in all respects with the description and figures 

 of Kjellman (1877. p. 52, fig. 23, 24). Rosenvinge (1893, 

 ]). 944 and 1894, p. 149), however, figures a plant under Kjell- 

 man "s name which has a long tubular stipe which is lacking in 

 the New England specimens, and also in the specimens of Miss 

 Tilden. Kjellman's plants lacked the base. The question is, 

 whether the plant of Rosenvinge or our plant is the plant of 

 Kjellman. Mr. Collins prefers to believe that our i)lants are 

 71/. leptodermum and that Rosenvinge's belong to another and 

 probably to a new species. 



Ulva Lactuca var. rigida (Agardh) LeJolis. 



In various situations. St. Lawrence Island, Alaska, Kjell- 

 iiKiii (1889, p. 53, under U. t'igida) ; Pathfinder Rock, Norton 

 Sound, Alaska,'/?. C. McGregor, No. 5080! ; St. Michael, Alaska, 

 ir..4.<S'., No. 5237x!, 5245y!; Shumagin Islands, Alaska, 

 ISauhders (1901, p. 410); Harvester Island, Uyak Bay, Alaska, 

 W.A.8. and A.A.L., No. 5116!; Virgin Bay, Prince William 



