COLLETOTRICHUM LINDEMUTHIANUM, 



SACC. AND MAGN. 



(Melon Rust) 



The fungus was reported to be injurious to melons in the 

 United States in 1889; it was said to be very destructive 

 in hot and moist weather. Brown spots appear on the 

 leaves at first ; these become darker in colour, and on them 

 the conidiophores of the fungus appear bearing conidia at 

 their tips. 



The application of ammoniacal copper sulphate was 

 recommended. 



Diagnosis. Spots almost round, dark-coloured ; acervuli 

 whitish, inflating the epidermis in the middle of the spot 

 and becoming finally erumpent ; conidiophores fasciculate, 

 cylindrical, 45-55 microns long, simple; conidia 

 acrogenous, oblong, straight or curved, rounded at both 

 ends, 1 5-19 by 3j-5i microns, hyaline. 



U.S. Dept. Agric. Botanical Division, Bull. 8, 1889. 



This fungus also occurs on the bean (Phaseolus vulgar is) 

 in Europe. 



COLLETOTRICHUM LAGENAR1UM, E. & HALS. 

 (Anthracnose of Watermelon.) 



This species has been recorded on the following plants : 

 watermelon, muskmelon, cucumber, pumpkin, and squash. 



The disease is well-known in the United States, where 

 the leaves and fruits of the plants are frequently anthrac- 

 nosed. 



Mr. B. Halsted regards this species as being identical 

 with Colletotrichum lindemuthianum above. 



HALSTED : New Jersey, Agric. College Expt. Station 

 Reports, 1893, p. 347- 



COLLETOTRICHUM FALCATUM, WENT. 

 (Red Rot of Sugar Cane). 



This disease has been reported from Hawaii, West 

 Indies, Bengal, Madras, Java, and Queensland. When a 

 plant is attacked the upper leaves lose colour and begin 

 to droop ; the third or fourth leaves from the unopened bud 



