168 PATHOLOGY [BoT. Absts., Vol. VII, 



PATHOLOGY 



G. H. Coons, Editor 

 C. W. Bennett, Assistant Editor 



PLANT DISEASE SURVEY; REPORTS OF DISEASE OCCURRENCE AND SEVERITY 



1125. Anontmoxjs. [Rev. of: Jar vis, E. Sugar cane diseases at Highleigh. Cairns 

 Post.] Australian Sugar Jour. 12: 363. 1920.— Reports presence of a sugar-cane disease at 

 Highleigh, near Gardonvale, which was due to the presence of the very free occurrence of two 

 fungi— cane rust ( Uromyces Kuhnii) and Cercospora sacchari—th&t normally cause little or 

 no injury. These fungi are always more or less in evidence on older leaves of half-grown 

 cane, but this year owing to wet weather they multiplied in places to injurious degree. If 

 these appear in March or April it is suggested that the lower leaves be stripped and burned 

 at once, but only when the trouble may be considered as being likely to extend to and 

 destroy young foliage. If the disease appears at the end of June or July, the risk of damage 

 is far less, for the sunny weather checks the growth of the fungus. Such factors as proper 

 cultivation, drainage, manuring, and the planting of varieties less susceptible to leaf dis- 

 eases and the burning of trash after harvesting, are to be recommended.— S. Koch. 



1126. Arnaud, G. Notes de Pathologie vegetale. [Phytopathological notes.] Bull. Soc. 

 Path. Veg. France 7 : 54^56. 1920.— Report of observations in the department of Gard, 

 France, April, 1920. The diseases are regarded as due to a period of dry, north winds. The 

 following diseases, which had apparently developed during a moist period preceding the 

 dry period, were observed: Peach pocket {Exoascus deformans) on peach and almond; Cory- 

 neum beijerinckii on walnut, peach, apricot, almond, cherry, and prune; Monilia cinerea on 

 cherry; Taphrina bullata and Nectria ditissima on pear; Stromatinia cydoniae on cydonia; 

 Cycloconium oleaginum on olive; and chlorosis of grape. — C. L. Shear. 



1127. Arthur, J. C. Two destructive rusts ready to invade the United States. Science 

 51 : 246. 1920.— Two rusts which seem to have possibilities of great harm, but which have not 

 yet invaded the United States, are mentioned. The first is Uredo arachidis, a rust of peanuts, 

 which is widely distributed in South America and is common in the West Indies. The rust has 

 been known to mycologists since 1884, but only recently has it attracted the attention of the 

 cultivator. Mr. Robson reports from Montserrat that in some years the disease is a serious 

 menace to the peanut crop of the British West Indies. This rust appears to be working its 

 way northward, since it was reported from Porto Rico in 1913, and from Cuba in 1915. The 

 second rust, Puccinia pitteriana, infects potatoes and tomatoes. It was found in Costa 

 Rica in 1904 and 1916, and in Ecuador in 1918. Only one kind of spore, the teliospore, is 

 produced in the life cyple, and this spore germinates at once. The habit of this fungus and 

 its mode of distribution are essentially those of the hollyhock rust. The author points out 

 that both of the above rusts may be capable of great damage if established in a region where 

 suitable host crops are extensively grown. — .4. H. Chivers. 



1128. Baudys, E. Prinos gljiva Bosne i Hercogovine. [Fungous flora of Bosnia and 

 Herzgovinia.] Glasnik zemaljskog Muzeja u Bosni i Hercegovini 30: 317-328. (1918)-1919.— 

 Phaneroascus quercinus n. g., n. sp. (Plectascineae) on living leaves of Quercus schneideri. 

 Phyllosticta allii n. sp. on living leaves of A. ampeloprasum. AUernaria holcina (new?) on 

 Holcus mollis.— Midgedium panciHi is a new host for Puccinia mulgedii. [Through abst. by 

 Matouschek in Zeitschr. Pflanzenkr. 30: 147. 1920.]— D. Reddick. 



1129. Birmingham, W. A. A condition resembling American "peach rosette." Agric. 

 Gaz. New South Wales 31: 581-582. 1 fig. 1920.— Conditions appeared upon young trees, 

 cions of which had come from America. This disease has evidently been unknown from 

 Australia. Descriptions and suggestions for control are given.— L. R. Waldron. 



