Notes and Brief Articles 



317 



disease, which renders the trees so unsightly, may be controlled 

 by sanitation, pruning, and spraying, but the process is expensive 

 and exacting. Spraying alone will be of value if done at the 

 proper time. Use the strongest Bordeaux mixture (5-5-50), 

 applying it thoroughly with a power sprayer before the leaves 

 are half grown, and repeat two or three times at intervals of a 

 week or ten days according to the weather. This solution kills 

 the summer spores and prevents infection of the new leaves. If 

 the dead twigs and leaves, both on the trees and on the ground, 

 are collected and burned, the winter spores will be killed and the 

 disease will not appear with the opening of the buds. All the 

 trees in a given locality should be treated at once. 



In an article on the growth of wood-destroying fungi on liquid 

 media contributed to the Annals of the Missouri Botanical Gar- 

 den for April, 1919, by Zeller, Schmitz, and Duggar, the follow- 

 ing conclusions are drawn : 



1. Many wood-destroying fungi are not suitable for growth 

 experiments with liquid media. 



2. With respect to the media employed and to the species 

 studied, Merulius pinastri, Polyporus lucidus, Polystictns versi- 

 color, Pleurotiis sapidus, and Trametes Peckii grow best in the 

 order named. Others grow well only on certain media, e. g./Len- 

 zites vialis, Daedalea quercina, and Merulius lacrymans on Rich- 

 ards' solution. 



3. Czapek's solution with the monobasic, and Richards' solu- 

 tion with the mono-, di-, and tribasic potassium phosphate proved 

 generally to be suitable media. Thus, there is a decided indication 

 of the desirability of selecting a specific medium for each fungus. 



Dr. Robert T. Morris has been collecting fleshy fungi on his 

 country place at Stamford, Connecticut, and sending them to the 

 herbarium of the Garden. He recently sent in a very peculiar 

 gray form of Venenarius solitarius, and specimens of the rare 

 Melanoleuca pallida and Lactaria atroviridis. He writes as fol- 

 lows : I ate a good-sized piece of the Lactaria atroviridis and 

 found it fairly tender, sweet, and good, with no bad effects fol- 



