Notes and Brief Articles 



91 



In a paper on two new Sclerotinia diseases found in Washing- 

 ton, by B. F. Dana in Phytopathology for May, 192 1, Sclerotinia 

 gregaria and S. demissa are described as new. The former occurs 

 on the leaves and fruits of Ameianchier Cusickii and the latter on 

 the leaves, twigs, and fruits of Prunus demissa. 



Kauffman's paper on the species of Inocybe in Peck's collections, 

 published in the Report of the State Botanist for 1919, contains 

 many interesting notes and comments which are especially valuable 

 because the author has recently completed a study of this difficult 

 genus for North American Flora, which is expected to appear dur- 

 ing the present year. 



Another paper on new or little-known hosts for wood-destroying 

 fungi, by Arthur S. Rhoads, appeared in Phytopathology for Au- 

 gust, 192 1. Quite an array of interesting hosts are noted for 

 many of our common species ; and additions both to hosts and 

 descriptive characters are made in the case of Polyporus cuti- 

 fractus Murrill and P. carbonarius Murrill. 



A circular leaf-spot of geranium plants, caused by Cercospora 

 Brunkii, is discussed by Garman in Bulletin 239 of the Maryland 

 Experiment Station. Methods of watering, rather than mites and 

 other insects, seem to spread the disease, which may be controlled 

 by good ventilation, precautions against excessive humidity, and 

 the use of Bordeaux mixture. 



For two years there has been an exhibit of the oriental diseases 

 of the Para rubber-tree, Hevea brasiliensis, at the Imperial College 

 of Science and Technology in London. The chief fungous dis- 

 eases represented are those caused by Fomes lignosus, Fomcs 

 psendoferreus, Ustulina sonata, Phytophthora Faberi, Corticium 

 salmonicolor, Cyphella Heveae, and Botryodiplodia Theobromae. 

 The specimens were shipped from Ceylon and Malaya under the 

 direction of J. B. Farmer. 



