125 



" your locality is particularly interesting as it lias not before beeiv 

 " found in Amei'ica." 



With regard to the parasite fungus infesting the leaves of various 

 species of potamogeton, Prof. Farlow at special request has kindly pre" 

 pared a detailed note of the species, which is appended to this report' 

 This note, coming from such a high authority, is of special value. 



Among the latest collections of the year were : Sept. 8, Aster 

 acuminatus, at Stewarton ; Sept. 23, Epiphegus Virginiana in flower. 

 Growing associated with this wei-e found the seed pods of Corcdlorhiza 

 multiflora. In a small beech wood near St. Louis Dam. Oct. 20, 

 Hamamelis Virginica in full flower. All of these, although quite 

 abundant where they occur, are very local, only a single locality for 

 each having so far been observed. 



On Oct. 27 the bottom of the Rideau Canal, near the Bank Street 

 Bridge, was found to be covered with enormous quantities of a species 

 of nostoc. The plants were round like marbles, and of a deep green. 

 They were generally single : but occasionally double specimens were 

 found, in which case one was smaller than the other. The size varied 

 from that of a small pea to one inch in diameter. 



In conclusion, the leaders would suggest to the members the 

 advisability of each one taking up the study of some particular family 

 of plants and making a specialty of it, and they are convinced that if 

 this is done valuable results will follow. Prof. Macoun studying the 

 fungi in this way discovered during last autumn in this locality no less 

 than eight species new to science. 



They would ako draw attention to the great advantages which ai^ 

 to be derived from cultivating plants from the seed and examining 

 them closely during their different stages of growth. Anyone who has a 

 garden at all can cultivate a few species, and many can even be grown 

 in flower-pots in a window. A large number of plants have been 

 grown during the last three years from seed received from our corres- 

 ponding members, particularly from Mr. Hill, who is in British 

 Columbia, and many rare plants have thus been examined, and have 

 had paintings made of them by Mrs. Chambevlin. Some which have 

 thriven particularly well, flowering freely and ripening their seeds are : 

 From British Columbia, Lewisia rediviva roots received in 1881 bore 



