648 Fungi) Bacteria und Pathologie. 



A decided increase in growth was obtained with certain nutrient 

 substances but no marked turnlng of hyphae toward these substances 

 could be noted. Hydrotropism is shown by some of the fungi changing 

 from positive to negative with an excessive increase of water. 



Perley Spaulding. 



HOLWAY. E. D. W., Notes on Uredineae. IV. (Journal of 

 Mycology. XI. p. 268. Nov. 1905.) 



Notes are given on the following species of Puccinia and Uro- 

 myces : Puccinia uniformis Pammel and Hume, P. oblicus B. and C.^ 

 P. fragilis Tracy and Gall., P. purpiisii P. Henn., Puccinia arabicola E. 

 and E., and Uromyces oblonga Vize. Hedgcock. 



HOLZINGER, John M., Grimmla glaiica, a new species ora 

 hybrid. (The Bryologist. IX. March 1906. p. 29—31. 

 figure.) 



Presenting a translation of M. Cardot's recent description of 

 Grimmia glauca from Northern France, in the Revue Bryologique, the 

 author discusses the Status and relationship of a specimen collected by 

 him in Minnesota, which though offering certain differences from the 

 European specimens is held by Cardot to be the same. In this 

 connection the opinions of both Dixon and Cardot are quoted. 

 Arguing from the lacic of opportunity for hybridization at the Minnesota 

 Station for G. glauca and from the physiographic conditions believed to 

 control the unusual appearance of other plants in the „driftless area" of 

 Minnesota, the author is inclined to regard G. glauca as presumably 

 of specific rank. Maxon. 



Kellerman, K. f. and T. D. Beckwith, Effect of drying 

 lipon Legume Bacteria. (Science. N. S. XXIIl. p. 47. 

 1906.) 



The writers refer to the fact that cultures of the Leguminous- 

 forming bacteria dried on cotton were more or less unsatisfactory — explain 

 that all of the nodule forming bacteria of the Leguminoseae may be 

 dried rapidly and kept in a dry condition for long periods, and may 

 then be revived successfully. Cultures properly dried may be killed by 

 exposure to moist conditions. Slow drying will kill a culture that 

 will remain in good condition under rapid drying. A highly concentrated 

 medium comparable to that which the almost dry cultures must endure 

 will kill the bacteria in question after an exposure of a few days. 



von Schrenk. 



Leoer, L. et 0. Duboscq, L'evolution des Eccrina des 

 Glomerls. (C. R. Acad. Sc. Paris. CXLII. 5 mars 1906. 

 p. 590—592.) 



Dans une Note anterieure (Bot. Centrbl. XCIX. p. 588) les auteurs 

 ont indique les caracteres generaux des Eccrinides en prenant pour 

 type VArundinella capitata. 11s rectifient le nom generique, dejä attribue 

 ä un genre de Gramine'es, et le remplacent par Arundinula. 



Le present travail est consacre ä YEccrina flexilis nov. sp.^ parasite 

 du Glomeris marginata. 



Les filaments, fixes ä la cuticule rectale par un pavillon, forment 

 dans leur Interieur, aux depens de la partie distale, des microconidies 

 ä 1 noyau et des macroconidies ä 2, 4 et 8 noyaux, d'autant plus 

 longues qu'elles renferment plus de noyaux. Ces Clements multiplient 

 le parasite ä l'interieur de l'hote. 



