Vol.]] Seicliell-Gardner . — Algm of North west em America. 181 



salt and brackish water. Whidbey Island, Wash., N.L.G., Nos. 

 301!, 670! 



The i)lants examined inider No. 670 showed fine conidia. 



Pleurocapsa fuliginosa Hanek. 



On piles of a wharf. Seattle, Wash., N.L.G., No. 306b! 



Dermocarpa fucicola Saunders. 



On various algcP. On Iridaea, Victoria, B. C, Tildeu, Nos. 

 328a!, 328c!; west shore of Whidbey Island, Wash., N.L.G., 

 291!; on Gelidiuni, East Sound, Orcas Island, Wash., X.L.G., 

 No. 522a! ; on Gigartina, west shore of Whidbey Island, Wash., 

 N.L.G., No. 77! ; on Odonthalia, west sJiore of Whidbey Island, 

 Wash., N.L.G., No. i)2! ; on Amphiroa, west shore of Whidbey 

 Island, Wash., K. L.G.I; on Fucus, Seattle, Wash, iSamider.'^ 

 (1901, p. 397) and in Collins, Holden and Setehell, P. B.-A., 

 No. 801! 



The present species occurs along the western coast of North 

 America from Puget Sound to Monterey, California, and grows 

 on all sorts of alga?. In its younger and purel.v vegetative con- 

 dition, the patches are small and the cells are long and narrow, 

 4-S /A broad and u}) to 2S f^ high, of equal breadth throughout. 

 Soon they begin to broaden above, giving them something of a 

 pear-shape. In this condition they correspond closely to the 

 description and figures given by Sauvageau (1895, p. 8, pi. 7, 

 f. 2, 3) of his J>. Biscdi/eiisi.s. 



Sauvageau 's specimens, which grew on Sargassum, do not 

 show conidia, but our specimens show that when the cells proceed 

 to this condition, they become still more swollen in the upper 

 part, while the lower part remains narrow, resembling a sort of 

 stii)e. In conidial condition the cells measure 60-65 p- in height 

 and 25-35 /j- in diameter. While we have used the name J). 

 fucicola, we believe that when fruiting specimens can be com- 

 pared, that this species will be found to be identical with D. 

 Bhcayensia Sauvageau. Saunders has quoted Sauvageau as 

 claiming a breadth of 25-30 /^ for his species, but as a matter of 

 fact that is the height, the breadth being given as 4.5-6 /a. 

 Savageau also speaks of the cells of his species as being broader 

 above than below. 



BOT.— 13 



