252 EXPERIMENT STATION" BECOED. [Vol. 38 



The organism is considored a wouiul parasite only, anil it can be {listin!j;uislied 

 from A. citri with difliculty. 



The perfect stage of Gloeosporium venetum, W. II. Bukkholdicu {Phyto- 

 pathology, 7 {1917), No. 2, pp. 83-91, figs. 3).— The author reports having ob 

 served a peculiar ascomycete wliile studying the anthracnose of the rasp jerry 

 'due to G. vcnclum. As tlie fungus was only found in connection with anthrac- 

 nose lesions, further studies, made to determine whether there was any rela- 

 tion betw(>en the two forms, led him to conclude that the second fungus observed 

 is the perfect stage of G. vcncium and that it belongs to the genus Plectodi- 

 scella. The name of the fungus, based on the fact that it is the perfect stage 

 of G. vvnvtvin, would be F. veiivta n. sp. A technical description is given of 

 the organism. 



Some changes produced in strawberry fruits by Rhizopus nigricans, N. E. 

 Stevens and L. A. Hawkins {Phytopathology, 7 {1017), No. 3, pp. /7S-/8//).— 

 The results are given of an investigation of the biochemical changes brought 

 about in strawberry fruits by R. nigricans. 



The effect of the fungus upon the various constituents of the strawberry is 

 said to be much the same as that -produced by other fungi on their hcwt plants. 

 Tlie authors account for the loss of juice which occurs in sti'awberries attacked 

 by R. nigricans as prob:d)ly due to the fact that the fungus so affects the pro- 

 toplasm of the cells that it is no longer capable of functioning as a semiperme- 

 able membrane. 



End rot of cranberries, C. L. Shear {TJ. S. Dept. Agr., Jour. Agr. Research, 

 11 {1917), No. 2, pp. 35-.!i2, pi. 1, figs. S). — The author describes an end rot dis- 

 ease of cranberry due to Fusicoccmn putrefacicns n. sp., which is said to have 

 been found in all the cranberry-growing sections of the United States and which 

 has occasioned consideralile loss in the past few years, especially to the Late 

 Howe variety. The rot is reported to start at either the blossom or the stem 

 end of tlie berry, linally producing a soft rot of the fruit. 



From circumstantial evidence, the author believes that the fungus, which is 

 technically described, is genetically related to a species of Cenangium. 



Spraying experiments in Massachusetts have sliown that the disease may be 

 largely pi-evented by tlie use of Bordeaux mixture. Some injury to cranberry 

 vines has been observed associated with tlie application of Bordeaux mixture 

 on the experimental plats in Massachusetts, but not elsewhere. The cause of 

 the injury is being investigated. 



A Rhizoctonia of the fig, J. Matz {Phytopathotogy, 7 {1917), No. 2, pp. 110- 

 118, pi. 1, figs. 3). — -A technical description is given of R. inicroselcrotia n. sp., 

 the cause of a disease of tig in Florida. An account of the relation of the fungus 

 to the leaf blight of tig has been noted (E. S. II., 37, p. 052). 



Variations in Colletotrichuni gloeosporioides, O. F. Buisger {Abs. in Phyto- 

 pathology, 7 {1917), No. 2, p. 151). — From a study of cultures of C. gloeos- 

 porioides isolated from different species of Citrus in California the author has 

 grouped the strains into three classes, based on the mycelial characters as de- 

 veloped in artificial media. 



Species of Melampsora occurring upon Euphorbia in North America, E. B. 

 Mains {Phytopathology, 7 {1917), No. 2, pp. 101-105). — Technical descriptions 

 are given of M. cuphorhixc-gerardhKF, M. euphorbiw, and M. monticola, the last 

 being a new species. All of these species are said to occur on Euphorbia in 

 North America, but none of them had been reported in this country until within 

 the past year. 



Diseases of ornamental plants, D. C. Babcock {Mo. Bui. Ohio Sta., 2 {1917), 

 No. 10, pp. 323-328, figs. 4)- — A description is given of some of the more com- 



