38 List of the St. Lawrence Algce. 



I have seen it in sucli abundance at Nahant tliat the 



sight of it here made me feel as if at the ocean side. 



The plant here is smaller." 

 Polysiphonia variegata, Ag. ^P. 45. Metis. In the collection 



of Mr. D. A. Poe. 

 Polysiphonia nigrescens, Grev. P. 49. In shallow rock pools^. 



Metis. 

 Polysiphonia mgrescens, var. fucoides, Grev. On stones and 



other Algas, Point des Monts. 

 Polysiphonia oiigrescens, var. affinis, Grev. Parasitical on Lami- 



naria, Rimouski. 



Order IIL — CoRALLlNACE^. 

 Corallina officinalis, Linn. P. 83. On stones and shells abundant^ 



Order IV. — SPHCEROCOCCOIDEiE. 



Delesseria sinuosa, Lam. P. 93. On rocks, Murray Bay. 

 An exceedingly variable plant. " In deep waters th& 

 frond often becomes very narrow with filiform lobes 

 produced into long tendrils. The margin of the frond 

 which in most cases is merely denticulate, is occasionally 

 bordered with slender simple or fimbricated lacinulae, 

 or fringed with great numbers of minute accessory 

 frondlets." Harv. The fringed and narrow varieties 

 are very common in the St. Lawrence. The collector 

 notes regarding this plant, that "it is the only species 

 of this genus I have found elsewhere than at Murray 

 Bay. This place is the garden of the St. Lawrence. " 



Delesseria/m&riaia, De la Pyl. P. 94. Parasitical on Chcetomor- 

 pha. Murray Bay. Newfoundland is the only other 

 locality noted by Harvey who does not appear to have 

 seen the plant. It is one of the most beautiful and 

 curious of the genus. The laciniae are densely fringed 

 with delicate twisted leaflets. 



DoiessQrisidenficulataj'Mont. P. 94. Parasitical on (7Ace^omor^jAa» 

 Murray Bay, Shores of Labrador and Brandy Pot 

 Island. The fronds are alternately branched. 



Delesseria a Za to, Lam. P. 95. North shore of the St. Lawrence, 

 collected by Mr. D. A. Poe. This seems a doubtful 

 specimen, very like D. fimhi'iata, but its leaflets are 

 shorter and entire on the margin. A narrower and 

 more distinct specimen from Kakoona is in my collection. 



