List of the St. Laurence Algce. 37 



that seemingly it is the same as 0. Kamtchatica Rupr. 

 In appearance it is very distinct from the previous 

 species. It may, we think, be added without hesitation 

 to the North American Algae. 



Ehodomela subfusca, Ag. P. 26. On stones in sandy bays 

 and on Jother Algae. Point des Monts, North Shore, 

 Rimouski and Metis. This is an exceedingly variable 

 plant, the young fronds spring from the terminations of 

 the old, and in summer give it a very bushy appearance. 

 In its winter garb and in its old state, it is very scrubby 

 and rigid in its branches 



Bhodomela lycopodioides^ Linn. Harv. Man. p. 78. The col- 

 lector notes regarding this plant that " though common 

 every where it is found in greatest beauty and size — in 

 large bushy fronds of more than a foot and a half in 

 length — at Murray Bay. Some pieces of iron removed 

 from a wreck at Caribou Island were perfectly covered 

 with this Alga." Although Harvey does not include 

 this species in his Ner. Bor.-Am., we cannot doubt its 

 identity with the British species of the name. Its pe- 

 culiarly graceful branches and the monoliform character 

 of its ultimate pinnae, which are covered with tetraspores, 

 distinguish it sufficiently from L. subfusca. It has no 

 conceptacles. 



Ehodomela gracilis, Kutz. P. 26, pi. XIII. C. This plant 

 is remarkable for its fine pedicellate conceptacles. There 

 is also an entire absence of tetraspores or stichidia. The 

 branching is exceedingly graceful, approaching in ap- 

 pearance to that of R. li/cojjodioides. 



Polysiphonia urceolata, Grev. P. 32. On stones and other 

 Algae below low water mark. Murray Bay and Metis. 



Polysiphonia formosa, Suhr. P. 33. Murray Bay, Rimouski 

 and Metis. 



Polysiphonia fibrillosa, Grev. P. 43. On stones below low 

 water mark, Point des Monts. 



Polysiphonia violacea, Grev. P. 44. On other Algae below 

 low water mark, Murray Bay. 



Polysiphonia fastigiata, Grev. P. 54. Parasitical on F. 

 nodosus. Metis and Point des Monts. The collector 

 remarks, "This plant makes its appearance first at Metis. 



