159 



his conclusions regarding the species of this genus in that area 

 was published in the Bidlethi of the Torrey Botanical Club (38 : 

 425-439- 1911-) 



Messrs. Harrington Moore, G. P. Burns, C. C. Adams, T. P. 

 Hankinson and Norman Taylor, spent a week in August study- 

 ing the ecological relations of the plants and animals near the 

 summit of Mt. Marcy in the Adirondacks. This trip was to 

 continue work started during the first week in June by the com- 

 mittee on cooperation of the Ecological Society in America. 



One of the most dangerous diseases of Irish potatoes has been 

 discovered in the United States. Rough, spongy outgrowths of 

 varying size are produced on the tubers, especially at the eyes. 

 These warts are light brown at first, but become black and 

 decayed with age. Sometimes all potatoes in affected hills are 

 worthless. The disease does not attack the vines above ground. 

 The wart is caused by a parasitic fungus (Chrysophlyctis endo- 

 biotica Schilb.), which was named and described by Schilberszky, 

 a Hungarian scientist, in 1896. It is one of the lowest members 

 of the Chytridiaceae, a group of parasites that attack the stems, 

 leaves, and especially the roots of many wild and cultivated 

 plants. Although it belongs in the same great group of fungi 

 as the common bread mold, it produces no mold growth and is 

 so small that it can hardly be seen with the naked eye. 



The first volume of The Cactaceae by N. L. Britton and J. X. 

 Rose was issued by the Carnegie Institution on June 21. The 

 work will comprise four volumes. The first contains descrip- 

 tions and illustrations of groups allied to Opnntia and of the 

 prickly pears themselves, and is one of the most sumptuous 

 botanical publications recently issued. It will be reviewed in 

 an early issue of Torreya. 



