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 3|-5i microns, hyaline. 



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



This fungus also occurs on the bean {Pliaseolus vulgaris) 

 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 arc frequently anthrac- 

 nosed. 



Mr. B. Halsted regards this species as being identical 

 with Colletotrichum lin&emuthianum 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 



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