414 Fungi, Bacteria und Pathologie. 



parasitic fungus on reaching a new country attacks its host-plant 

 with exceptional virulence for several years after its arrival. 



A. D. Cotton (Kew). 



Salmon, Ernest S., On Oidiopsis taurica (L^v.) an endophytic 

 member of the Erysipliaceae. (Ann. Bot. Vol. XX. April 

 1906. p. 187—199. 2 Plates.) 



The author gives a füll account of the morphology and life- 

 history of Erysiphe taurica Lev , a member of the Erysipliaceae 

 which last year he recorded as being endoparasitic. On account of 

 its endophytic habit he separates the plant as a distinct genas 

 Oidiopsis Scalia (emend.) belonging to a new sub-family Oidiop- 

 sideae. 



He gives the following revision of the family Erysipliaceae. 



I. Erysipheae. Mycelium wholly external to tissues of host 

 plant, the hyphae sending haustoria into the epidermal cells alone. 

 Genera Podosphaera, Sphaerotheca, Uiiciniila, Microsphaeria, Ery- 

 siphe. 



II. Phyllactinie ae. Conidiophores and perithecia borne on 

 a superficial mycelium, which does not form haustoria in the epi- 

 dermal cells, but sends down through the stomata special branches 

 of limited growth, which send haustoria into the cells of the meso- 

 phyll-tissue. 1 genus Pliyllactinia. 



III. Oidiopsideae. Mycelium at first wholly endophytic, pro- 

 ducing conidiophores sent up through the stomata; perithecia produ- 

 ced on the hyphae of a superficial mycelium, originating from the 

 endophytic mycelium. 1 genus. Oidiopsis. 



The synonomy of 0. taurica and its distribution and host plants 

 are added. A. D. Cotton (Kew). 



Sartory, Sur l'existence constante d'une levure chro mö- 

 ge ne dans les sucs gastriques hyperacides. (CR. 

 Sog. biol. Paris. T. LX, 31 mars 1906. p. 619-620.) 



En semant le liquide gastrique extrait ä jeun chez les hyper- 

 chlorhydriques, on obtient, 11 fois sur 12 cas, des cultures d'une 

 levure rose ä globules spheriques, plus petite que le Saccliaromyces 

 rosaceus. Elle ne pousse bien qu'entre 15 et 30"; toutefois eile 

 donne des cultures de plus en plus päles jusqu a 39". 



Cette levure rose est accompagn^e d'une levure incolore de 

 VOidium lactis et d'un Staphylocoque ne liqudfiant pas la gdlatine. 



Paul Vuillemin. 



Saunders, James, Mycetozoa of the South Midland s. (Journal of 

 Botany. XLIV. May 1906. p. 161 — 165.) 



The paper consists of notes on the habit and distribution of 

 species of Mycetozoa. Didymium Trochus, Cliondrioderma testaceum, 

 Pliysariim contextuin, and others, are recorded as occurring in the 

 greatest abundance for several consecutive seasons, and then, without 

 any change in the conditions obtaining, suddenly disappearing for 

 an indefinite period. A. D. Cotton (Kew). 



Schorstein, J., Sporenkeimung in Somatoselösung. (An- 

 nales mycologici. Bd. IV. 1906. p. 295—296.) 



Verf. fand, dass Sporen von Xylaria polymorplia, welche in 

 anderen Nährlösungen nicht zur Keimung zu bringen waren, in 



