8 



NEW YORK STATE MUSEUM 



as a source of information regarding the publications upon the flora 

 of the State and as a guide in future investigations seems par- 

 ticularly opportune at this time. Considerable time has been given 

 to the preparation of such a bibliography, which is printed in this 

 report. 



Plant diseases. The principal plant diseases caused by fungi 

 which have been submitted to this office have been parasitic leaf 

 diseases of ornamental and shade trees species. The most note- 

 worthy is a disease of the foliage of wild and cultivated clematis 

 caused by Ascochyta clematidina; a disease of oak 

 leaves caused by Gloeosporium canadense and also a 

 peculiar association of an insect gall and Phyllosticta 

 phomiformis ; diseases of the leaves of the woodbine or 

 Virginia creeper caused by Cercospora ampelopsidis 

 and Phyllosticta ampelopsidis, and a disease of horse 

 chestnut leaves caused by Phyllosticta paviae. These 

 are illustrated and discussed in another place under " New or Inter- 

 esting Species of Fungi.'' 



Memoir on the Wild Flowers of New York. Active work upon 

 this project was begun in August and photographs were made in 

 central New York, vicinity of Albany, Catskill, New York, and on 

 Long Island, of over 150 flowering plants which bloom during the 

 latter part of the summer and autumn, using both dry and lumiere 

 plates. Preliminary proofs of several of the illustrations have been 

 received showing the natural color and grace of the wild plants in 

 a manner that could not be secured by any other process. A few 

 of these are published in this report. 



Exchanges. Valuable exchanges of herbarium material have 

 been effected whereby the state herbarium has been enriched by the 

 addition of 254 specimens from Prof. J. J. Davis of the University 

 of Wisconsin, 47 specimens from the New York Botanical Garden, 

 62 specimens from Prof. John Dearness of London, Ont., and 68 

 specimens from Prof. L. H. Pennington of Syracuse University, in 

 addition to several minor exchanges. 



Condition of the collections. With the addition to the staff of 

 Mr Joseph Rubinger, the assistant botanist, it has been possible to 

 place the state herbarium in an excellent condition as regards 

 arrangement and availability of material for study. The collections, 

 exchanges and contributions of the current year have been mounted 

 and placed in the herbarium together with a large quantity of 

 unmounted material which had accumulated in years past. 



