REPORT OP THE SOCIETY 123 



As has been previously stated this is a progress report and further experi- 

 ments in the field on tomato, potato, tobacco and other Solanaceous plants are 

 being carried out on a large scale this summer. 



LITERATURE CITED. 



(1) 1892 — Bailey, L. H. Some troubles of Winter Tomatoes. I. Winter Blight. Cornell Univ. 



Agr. Exp. Sta. Bui. 43: 149-1.58. 



(2) 1896— Selbv, A. D. A Blight of Forced Tomatoes. Ohio Agr. Exp. Sta. Bull. 73: 237-241. 



(3) 1914— Clinton, G. P. Calico of Tobacco. Conn. Agr. Exp. Sta. Rept. 1914, Expt. 28, p. 373. 



(4) 1918 — Howitt, J. E. and Stone, R. E. A Troublessome Disease of Winter Tomatoes. Phy- 



topath. 6: 162-166. 



(5) 1919— Paine, S. G. and Bewley, W. F. Stripe Disease of Tomato. Ann. App. Biol. 6: 2 & 3. 



183-202. 



(6) 1922— Gardner, M. W. and Kendrick, J. B. Tomato Mosaic. Indiana Agr. Exp. Sta. Bui. 



361: 1-24. 



(7) 1923— Taylor, W. H. Black Stripe and Its Control. Abstract in Rev. Appl. Mycol. II: 9 



430. 



CULTURAL CHARACTERISTICS OF CERTAIN 

 COLLETOTRICHUM SPECIES. 



by 



G. A. SCOTT, B.S.A., M. Sc. 

 Introduction. 



Among the fungi, one of the most important groups is that which includes 

 the "anthracnose organisms", that is to say, the Colletotrichums and Gloeos- 

 poriums, the Volutellas and Vermicularias with the perfect stages of such of these 

 as are known. As a group it has received considerable attention from the point 

 of view of Morphology, Cytology, Physiology, Taxonomy, Pathogenicity, etc. 



The study reported here was suggested by Dr. B, T. Dickson, Head of 

 the Department of Botany, Macdonald College of McGill University and was 

 undertaken by the writer while holding a Macdonald Scholarship for 1923-24. 



During the last few years attention has been drawn to diseases of potatoes 

 variously known as "Dartrose", "Black Dot", "Foot Rot", "Anthracnose", etc. 

 The diseases have been described from France, England, Canada and the Un'ted 

 States of America. From published descriptions there appeared to be sufficient 

 similarity in symptoms to warrant a study of the causal organisms in order to 

 determine their relationship. The present paper is concerned with the cultural 

 characteristics of the organisms on various media, and, at the same time with 

 certain morphological characteristics which were considered of sufficient impor- 

 tance to form the basis of comparison. 



