452 EXPERIMENT STATION RECORD. 



jigriciilture has granted a sum of about if2,2r>0 toward the publication in news- 

 papers of a full description of the disease, with instructions for ridding gardens 

 of this pest. 



It is recommended that all infected bushes be dug up and burned and to i)re- 

 vent the spread of the mildew by spraying the bushes with a strong mixture of 

 sulphur. The importation, transplanting, or sale of gooseberry bushes is pro- 

 hibited until the end of the year 1907. Growers will be compensated for the loss 

 of stock, preference being given those who have cultivated them for nursery 

 jmrposes. 



Attention is called to the fact that this fungiis occurs on related species, par- 

 ticularly on some of the currants, and in one instance it is said that the fungus 

 has been found on raspberries. 



The American gooseberry mildew in 1906, E. S. Salmon (Gard. Chron., 3. 

 ser., JfO {1906), A'o. lOSa, pp. 301, 302).— A warning is given to English goose- 

 berry growers of the danger of introduction of the American gooseberry mildew 

 (Spharotlicca mors-uvcr), which is reported as being very prevalent in parts of 

 Ireland. 



Attention is also called to the occurrence of this fungus in Germany and 

 Sweden, and the means that are taken to combat its sjiread. 



A disease of grape stocks, P. Magnus (Ber. Dent. Bot. Gesell., 24 {1906), 

 \(>. 7. pp. .'i02-.'i(U! ) . — A discussion is given of the reported occurrence of rhizo- 

 niorphs of ArtniJhtrki itteUca on grape stocks, and the author announces the 

 identification of the basidiomycetes, CoUj/bia t^clutipcs, and Mnras)iiius horealis 

 on material submitted for study. The latter species is believed to be in all 

 probability a saprophyte. 



A new Plowrightia from Guatemala, W. A. Kellerm.an {Jour. Mycol., 12 

 {1906), No. 85, pp. 185-1H7, pi. 1). — A disease of the American century plant 

 {Agave americana) is described, which attacks the living leaves at a few points, 

 the infection proceeding rapidly until the entire leaf may be involved. 



The fungus appears to be an undescribed species of Plowrightia, and the 

 author has designated it as P. wiUiamsoniaiia n. sp. A technical description is 

 given. 



A blister blight of tea, II. H. Mann {Indian Tea As.^or. [Pamphlet] 3, 1906, 

 pp. 13, pis. .3). — A serious outbreak of blister blight on tea in Upper Assam has 

 drawn especial attention to this disease on account of the completeness of the 

 destruction which it causes in a very short time and of the local character of 

 its appearance. 



The disease is caused by the fungus PJ.robai^idium rr.rajis, w'hich can be 

 found sporadically on tea leaves throughout the year, but becomes epidemic 

 only from April to June. The infection is carried from season to season by 

 these sporadic leaves, and germination appears to take place only on a wet leaf 

 or stalk. It usually reciuires about 10 days from germination to become visible 

 on the leaves, and in about 2 or 3 weeks the disease reaches the characteristic 

 white stage. 



As a rule the least healthy and vigorous bushes are those most subject to the 

 blight, the best plants generally being less affected, and on this account the 

 author recommends measiires that will tend to increase the vigor of the plants. 



The occurrence of Lasiodiplodia on cacao and mangoes, Vee.\ K. Charles 

 {Jour. Mycol., 12 {1906), No. 87/, pp. i//.j, 146). — A brief account is given of an 

 investigation of diseased wood and fruits of cacao which were sent to this 

 Department from Brazil for examination. Subse(]uent consignments showed 

 the same disease to be present in San Domingo and also on the fruit of mangoes 

 that probably came from Florida. In both instances the fruits were found 



