374 EXPERIMENT STATION RECORD. 



lected by the author in the State of Washington, with critical notes regarding the 

 different species, the host plants, etc. 



The Ustilagineae, or smuts, of Connecticut, G. P. Clinton (Conn. State Geol. 

 mid Sat. Hist. Survey Bui. 5, pp. 45, pis. 7 i. — A list of smuts known to occur in 

 Connecticut is given, based chiefly on collections made by the writer during the past 

 3 seasons, which are contained in the herbarium of the Connecticut State Station. 

 The list embraces descriptions of 12 genera and 50 species. 



Cultures of Uredineae in 1904, J. C. Arthur (Jour. Mycol., 11 (1905), No. 76, 

 pp. 50-67). — The author gives a report upon investigations of plant rust which cover 

 studies from 1899 to 1904. In these studies the grass and sedge rusts hold a promi- 

 nent place, but a number of others have been included. 



Successful cultures which have not hitherto been reported are given as follows: 

 Melampsora Hgelowii grown from teleutospores 'on Salix amygdaloides sown on Larix 

 decidua; Puccinia tomipara from teleutospores on Bromus ciliatus sown on Clematis 

 virginiana; Puccinia stipse from teleutospores on Stipa spartea sown on Aster multi- 

 florus, A. ericoides, and A. novse-anglise; Puccinia sorghi from secidiospores on Oralis 

 cymosa sown on Zea mays; and Puccinia podophylli from iecidiospores on Podophyllum 

 peltatum sown on same host. 



The cedar apple fungi and apple rust in Iowa, L. H. Pammel (Iowa Sta. Bui. ■ 

 84, pp. 36, figs. 11). — During the past few years apple rust has become so prevalent 

 in Iowa that the author was led to investigate the subject and presents the results in 

 this bulletin. 



The relationship between the cedar apples caused by Gymnosporangium upon juni- 

 pers, and the Roestelia stage occurring on a number of rosaceous plants is described. 

 Lists are given showing the connection between different species of Gymnosporan- 

 gium and Rcestelia, after which the author describes at some length G. globosum, G. 

 macropus, G. clavipes, G. nidus-avis, and G. clavariasforme. The distribution of these 

 species is indicated and the relationship between the two forms pointed out. 



A number of inoculation experiments made by theauthorand others are described, 

 showing the results of the transfer of spores from the cedar apples to the leaves of 

 different varieties of apples, to crab apples, service berry, etc. Decided differences 

 are noted in the degree of susceptibility possessed by different varieties of apples, and 

 for the control of the rusts the author recommends the planting of resistant varieties 

 and the removal of the cedar trees about orchards. 



Report of the mycologist, J. B. Carruthers (Admin. Rpts. Roy. Bot. Gard. Cey- 

 lon, 1904, Ed., Sri., and Art, pt. 4, pp. 5, 6). — Notes are given on the gray blight of 

 tea, caused by Pestalozzia guepini, the root disease of tea (Rosellinia radiciperda) , and 

 diseases of rubber, cacao, and betel pepper. 



On the occurrence of Peronospora parasitica on cauliflower, H. vonSchrenk 

 (Mo. Bot. Gard. Ann. Rpt, 16 (1905), pp. 121-1?4, pis. 3).— It is stated that cauli- 

 flower plants grown in a greenhouse in the Missouri Botanical Garden during 1903 

 were almost universally attacked by the mildew, Peronospora parasitica. 



The fungus made its appearance suddenly, and within a week had affected practi- 

 cally every plant in the greenhouse and threatened the entire destruction of all cauli- 

 flowers. Acting upon various suggestions for the control of this fungus a number of 

 sprays were used including copper sulphate, ammonium copper carbonate, and potas- 

 sium sulphid. In order to make the solutions more adhesive small quantities of glue 

 were added and it was found to form a very effective way of holding the solutions on 

 the leaves of the cauliflower. 



Good results were obtained with all the sprays with the exception of ammonium 

 copper carbonate, which while killing the fungus caused other injuries to the leaf 

 which are mentioned in another place. The fungus disappeared during the spring 

 months, and the following winter the beds of the greenhouse were carefully treated 



