DISEASES OF PLANTS. 45 



the diseases, and the suggestions for combating tbem are those that recent in- 

 vestigations have shown to be the most successful. 



The grouping of the diseases is essentially the same as in the previous work 

 and is in the sequence of the orders of fungi and not by host plants. 



Control of diseases of fruits, vegetables, and flowers, H. C. Thompson 

 {.Mississippi Sta. Bui. l.'fl, pp. 3-30, flgs. ;37).— Brief descriptions are given of 

 some of the principal diseases affecting fruits, vegetables, and flowers, together 

 with directions for their control, including the preparation and application of 

 the common fungicides and insecticides, types of sprayers, and remedies other 

 than sprays that should be used. 



Report on some plant diseases, F. BtrBAK (Ztschr. Landio. Vcrsuchsw. 

 Osterr., 18 {1910), No. 4, pp. 502-505). ~ln a report of the work done during 

 1909 by the station for plant diseases of the Royal Agricultural Academy in 

 Tabor (Bohemia), the more important fungus diseases and insect pests examined 

 or studied are given, including a new grape fungus {Fusicoccum bulgaricum). 

 Experiments with Ustilago sorghi and U. bulgarica (E. S. R., 23, p. 250) on 

 Sorghum vulgare showed that the characteristics of the new fungus {U. bul- 

 garica) are constant and that it is capable of infecting the young seedlings like 

 U. sorghi. 



Notes on some plant diseases, T. H. Johnston {Agr. Gas. N. 8. Wales, 21 

 (1910), No. 7, pp. 563-566, pis. 2). — Attention is called to the presence of late 

 blight {Phytophthora infcstans) on tomatoes and the relationship of this dis- 

 ease to potato and tomato crops. Of potato diseases, both late blight and leaf 

 spot (Alternaria solatii) are fairly common, while the honey fungus {AnniUaria 

 mellea) was found in potato tubers. 



The commonest apple scab is Fusicladium dendriticum, but another scab is 

 also described due to the fungus Coniothecium chromatosporum. Spraying with 

 Bordeaux mixture controlled the common scab {F. dendriticum), but not the 

 otlier one. 



Fungi exotici, XI, G. Massee {Roy. Bot. Gard. Keio, Bui. Misc. Inform., 

 1910, No. 7, pp. 2J,9-253, pis. 2).— Twelve new species of fungi are described. 

 Two of these are of special interest, Nectria theobromicola from West Africa, 

 parasitic on the pods of Theobroma cacao, and Eutypa caulivora from Malay, 

 parasitic on the wood of Hevea brasiliensis. A popular description of the latter 

 has been previously noted (E. S. R., 23, p. 750). 



Cultures of parasitic Hysteriaceae, K, von Tubeuf {Naturw. Ztschr. Forst u. 

 Landic, 8 {1910), No. 8, pp. .',08-1,11, fig. i).— The author gives the results of 

 cultures of leaf cast fungi, such as Lophodermium pinastri. on gelatin, broth, 

 and other artificial culture media. 



On the synonomy of the genus Nectria, F. voN Hohnel and J. Weese {Ann. 

 Mycol., 8 {1910), No. J,, pp. ^6^-/, 68). —The results are given of a study of mate- 

 rial of this group found in the herbaria at Berlin, Kew, and Paris, and the 

 Rehm herbarium at Munich. 



The smuts of Australia, D. McAlpine {Melbourne: Dept. Agr. Victoria, 

 1910, pp. 288, pis. 57, figs. i6).— The object of the present work is to classify 

 and describe all known species of Australian smuts, to supply photomicrographs 

 of their spores and other important features so as to determine their identity, 

 and to give an account of their life histories as far as present knowledge goes, 

 in order that a rational mode of treatment may be adopted for preventing their 

 ravages in cultivated crops. 



The general plan of the work is along the same lines as that of The Rusts 

 of Australia (E. S. R., IS, p. 149), and is divided into 5 subdivisions as follows: 

 (1) General characters, including vegetative and reproductive organs (spores, 

 conidia, etc.), spore formation in Australian genera, germination of spores, 



