5 GEORGE V. SESSIONAL PAPER No. 39b A. 1915 



PRELIMINARY REPORT ON THE PLANTS OF GEORGIAN BAY. 



A Contribution to the Biology of the Georgian Bay Waters. 



By W. T. MacClement, M.A., D.Sc. 

 Professor of Botany, Queen's University, Kingston. 



With an added List of Algce collected and determined by A. B. Klugh, M.A., Lecturer 



on Botany, Queen's University, Kingston. 



During my stay in 1911 at the Dominion Biological Station, Go Home Bay, 

 Georgian Bay, I hoped to begin a study of the fungus attacking fish-eggs in the 

 vicinity of the Station. I was unable to reach the Station until June 19th, the 

 first summer trip of the passenger steamer from Penetang. I found that by that 

 date all the Black Bass had left their eggs, which had either hatched, decayed, or 

 been in some other way hidden or destroyed. Rock Bass, — AmhlopUtes rupestris 

 — were still protecting their eggs. I collected and preserved all I could find of 

 these, as in every case they were attacked by a fungus. This I was able to 

 identify as a ' Saprolegnia,' probably 'mixta.' On most of the lots of these eggs 

 the fungus had reached the zoopore stage, but I have been unable to discover any 

 Saprolegnia oospores on them. I gathered a good many facts regarding this 

 fungus and its distribution and its attacks on fish and fish eggs, but this should 

 accompany an account of its conditions and effects in our waters, such as I hope to 

 be able to prepare at some future time after a study of these waters earlier in the 

 summer. 



Disappointed in my hope of studying water-moulds I turned my attention 

 to the green water-plants of Georgian Bay. So far as I can learn little work has 

 been done in this field, and no report upon them published. Dr. Bensley who was 

 Curator of the Station, informed me of the desii ability of gathering materials 

 for a complete biological survey of Georgian Bay, on account of the close relation 

 of these facts to the fishing industry. 



Accordingly I gave my time to the collecting and determining of the littoral 

 and plankton flora, of the waters within convenient reach of the Station. In- 

 cidentally I collected and classified all the fleshy fungi I found — some thirty-five 

 species in 1910 and 1911. My list of plants must be considered as preliminary, 

 as many common genera were not in fruit at the time I collected them and could 

 not be identified. Also in such a group as the Diatoms my identifications are only 

 of the well marked species. 



My assistant, Mr. Klugh, spent May and June on the west side of Georgian 

 Bay in the vicinity of Colpoy's Bay, and at my suggestion studied the algae found 

 there. I am inserting his list to supplement my own. 



