340 



Mycologia 



publications cited, prepared by Florence P. Smith, and biographical 

 notices of persons mentioned in the correspondence, contributed 

 by J. H. Barnhart. 



A new leafrspot of the so-called Egyptian lotus caused by Alter- 

 naria Nelumbii is described and figured by Enlows and Rand in 

 Phytopathology for March, 192 1. It appears as very small, 

 smooth, reddish-brown flecks, which increase to a diameter of 

 5-10 mm. No perfect stage was discovered, but the conidial stage 

 appears to possess great longevity. This disease was first observed 

 by Rand in 191 3 at Kenilworth, D. C, and at the New York 

 Botanical Garden. 



In Department Circular 177 of the U. S. Department of Agri- 

 culture, prepared by Martin and others, a method of treatment is 

 outlined for ornamental pines affected by blister-rust. It is 

 claimed that " infected ornamental pines can be saved by properly 

 cutting out the diseased parts, if the work is done in time. The 

 best results will be obtained in the spring, and success depends 

 upon finding and completely removing the cankers. Tree surgery 

 of this kind can be performed by the owner at small cost." 



Farmers' Bulletin 11 87 of the U. S. Department of Agriculture, 

 by W. W. Gilbert, deals in a popular way with the chief diseases 

 of cotton and their control. Wilt, caused by Fusarium vasin- 

 jectum, is controlled by the use of resistant varieties and crop rota- 

 tion. Anthracnose, due to Glocosporium Gossypii, also requires 

 rotation and resistant varieties, care being taken to use only per- 

 fectly healthy seed. Bacterial blight requires the same treatment 

 as anthracnose. Other minor fungous diseases are also described 

 in this bulletin. 



A new budrot disease of Cannas due to Bacterium Cannae is 

 described and figured by Mary K. Bryan in the Journal of Agri- 

 cultural Research for May 2, 1921. Infection takes place through 

 the stomata and spreads through the intercellular spaces of the 

 parenchyma of leaf-blade, petiole and stalk. The disease is most 



