67 



it came from a nursery near Rochester. It has a spread of ahout 

 thirty feet. It bears only one nut in each bur. The fungus is 

 present here as on all these specimens, and places on the trunk and 

 branches may be seen where the cankers have been healed over. 



Other promising stock, evidently of the Japanese chestnut, may 

 be seen on jn-ivate estates at Jericho and Huntington, Long Island, 

 at Ardsley and Kitchawan, New York, and in several other nearby 

 localities. 



A^iits of Resistant Stock. Collections of nuts from most of the 

 above trees and from others in Connecticut and New York, in- 

 cluding a valuable hybrid originated by Dr. }\obert T. Morris 

 between the native chinquapin and chestnut, are being overwin- 

 tered at liamden. Conn., and will be planted in the spring. 



Systematic Botany 



By Alfred Gundersen 

 Intonational List of Genera 



Communication No. lo was issued in mimeographed form in 

 January, containing ditTerences in usage as to plant families. 

 Replies as to preferences of institutions will l)e included in the 

 next communication. Compilation of differences as to usage in 

 genera has required a large amount of time, but will be ready for 

 publication early in 1930. In this connection I corresponded with 

 many botanists and visited the National Herbarium in the spring, 

 and the Arnold Arboretum and Gray Herbarium in the fall. 



Floral Structures 



I continued studies of the floral structures and the distribution 

 of families of dicotyledones. 



Frankenias 



A paper on South American Frankenias is nearly ready for 

 publication, though I am in need of more material, especially from 

 Argentina. 



Opposite-leaved Shrubs 



Miss Mary MacAIurray, of the Richmond Hill (Long Island) 

 High School, continued the study of opposite-leaved shrubs, begun 

 in 1928. 



