DISEASES OF PLANTS. 455 



that have been observed in Java as affecting cultivated plants. Among those 

 described are Cortidum juvanicum on twigs of cinnaTiion, cola, etc.; Peronospora 

 cubensis atra n. var., on leaves of cucurbits; EhizopJddium fimgicolum n. sp., on cacao 

 fruits; Antennaria setosa n. sp. and Capnodium javanicum n. sp., on coffee leaves; 

 Physalospora fallaciosa on banana leaves; Nectria luteopilosa n. sp. and N. frulicosa 

 n. sp., on the fruit of the Liberian coffee; Ophionectria folikola n. sp., Pleonectria 

 coffeicolan. sp., Phyllachora macrospora n. sp., Myriangiella orbicularifi n. g. and sp., 

 Coniothyrium coffex n. sp., upon the leaves of Liberian coffee; Dqilodki coffeicola n. sp., 

 on the fruit of Liberian coffee; Glaosporium coffeanum on the leaves of the same; 

 Cercospora coffeicola on the leaves of Arabian coffee; C musx n. sp., on banana leaves; 

 Scokcotrichum viusee on the same, and Ehomhost^bella rosx n. g. and n. sp., on Liberian 

 coffee leaves. 



Cultures of TJredineae in 1900 and 1901, J. C. Arthur (Jour. MycoL, 8 {1902), 

 Xo. 62, pp. 51-56). — During UH)0 and 1901 the author demonstrated by meajUS of 

 cultures the life cycle of a number of rusts, as follows: Uromyces euphorbia, Puccinia 

 caricis, P. angustata, P. poculiformis, P. albiperidia, P. caricis-erigerontis, P. caricis- 

 asteris, and P. bolleyana. 



New species of Uredinese, J. C. Arthur {Bid. Torrey Bot. Club, 29 {1902), No. 4, 

 pp. 227-231). — The author describes a number of new species of Uredineee, all but 

 one of which are indigenous in the United States. The species described are Uro- 

 myces rickerianus on Eume.v geyeri, U. rottbcellia; on Boiibailia speciosa, Puccinia tosta on 

 Sporobolus ciispidatus, P. tosta luxurians on Sporobolus airoides, P. pera on Saxifraga mer- 

 tensiana, P. turrita on Saxifraga bronchialis, P. adenostegix on Adenostegia pilosa, Uredo 

 panici on Panicum amarum, and U. cephalanthi on Cephalanthus occidentalis. 



A new species of Rhytisma, W. A. Kellerman {Jour. Mycol., 8 {1902), No. 62, 

 pp. 50, 51, pi. 1). — A description is given of Rhytisma concavum parasitic on the 

 leaves of the Ilex rerticillata. 



New Alabama fungi, J. B. Ellis and B. M. Everhart {Jour. MycoL, 8 {1902), 

 No. 62, jip. 62-73). — Descriptions are given of about 60 species of fungi, some of 

 which are parasitic on plants of economic importance. 



Investigations on the experimental production of plant parasites among 

 some common bacteria, L. Lepoutre {Coinpt. Bend. Acad. >Sci. Parix, 134 {1902), 

 No. 16, pp. 927-929). — Experiments are reported wdth Bacillus fluoresscens liquefg.ciens, 

 B. mycoides, and B. mesentericus vtdgatus, 3 very common bacteria in soils, air, and 

 water, in which an attempt was made to produce infection upon potatoes, carrots, 

 and parsnips. These roots were grown under conditions which were designed to 

 diminish their resistant properties, after which they were inoculated with cultures 

 of the bacteria. Characteristic rotting and destruction of the tissues took place show- 

 ing the possibility of the infection of tissues weakened by various causes. The organic 

 acids produced by the bacteria attacked and destroyed the sugar in the various tubers. 



Pure cultures of Puccinia dispersa, H. M. Ward {Proc. Roy. Sue. [^London], 

 69 {1902) , No. 458, pp. 451-466, figs. 2). — A description is given of a method by which 

 the author has been able to obtain pure cultures of Puccinia dispersa grown upon 

 species of Bromus. The method of conducting the experiments is described in detail 

 and the effect of mineral supplies on the infection of the host plant is discussed. The 

 results obtained seem to show that phosphoric acid resulted in the production of a 

 long, limp growth of pale color, and the spots where the fungus was present showed 

 corrosion and collapse of the tissue, instead of the normal appearance. A similar 

 appearance was derived in the case of potash, except the plant was not so drawn or 

 etiolated. When magnesium was added to the cultures the appearance of the plant 

 and fungus spots were more nearly normal. The absence of lime from the cultures 

 seemed to show little effect; but this is believed to have been partly due to the pres- 

 ence of a small quantity in the pots and soil. So far as the results obtained go they 

 suggest that differences in the supply of minerals affect the development of mycelium 



