988 EXPERIMENT STATION RECORD. 



far does not seem to be associated with any particular fungus disease. The masses 

 of gum appear on the fruit and are attributed to a disorganization of the tissues of 

 the fruit, resulting in the formation of pectose and pectate of lime, or the grapes are 

 charged with gum which presents itself and can not be attributed to the pathogenic 

 action of any foreign organism. The trouble seems to have been very local and is 

 not believed to constitute a destructive disease. 



The red rust of tea, H. II. Mann and C. M. Hutchinson (Indian Tea Assoc. 

 [Pamphlet] 4, 1904, pp. 26, ph. 7). — In continuation of previous notes on the subject 

 (E. S. R., 15, p. 277) the authors give an extended account of the red blight or rust 

 of the tea plant, which is attributed to the alga Cephcdeuros mycoidea. The distribu- 

 tion of this disease throughout India is indicated and its effect upon the tea plant 

 described. 



The spores are carried about and distributed similarly to those of fungi, and find- 

 ing suitable lodgment they produce the characteristic red rust patches on the stems 

 in April, May, and June following infection in the previous rainy season. 



The alga grows on a number of trees besides tea, and it is said to be almost hope- 

 less to attempt to keep it out of the tea plantations. Anything that interferes with 

 the rapid, strong growth of the tea plants makes it subject to attack of the rust, and 

 the authors discuss the value of cultivation, enriching of soil, resistance of varieties, 

 methods of pruning, etc., as means for preventing loss. Where pruning is resorted 

 to it is suggested that thorough spraying with Bordeaux mixture should follow the 

 pruning and that all the diseased material cut off should be burned. 



Some fungus parasites of coffee, G. Delacroix (Bui. Soc. Mycol. France, .'<> 

 (1904), pp- 142-151, pi. 1; abs. in Bat. CenlbL, 96 (1904), No. 47, p. 553).— Descrip- 

 tions are given of Capnodium cqff'eiv, Anthoslomella coffese, Hendersonia coffese, Rhabdo- 

 spora coffeicola, Plujlloslicta coffeicola, and P. comamsis, all of which are reported as 

 occurring on coffee trees in Mexico. 



A new and destructive disease of oaks, W. Ruhland (Centbl. Bakt. u. Par., 2. 

 Abt., 12 (1904), No. 6-8, pp. 250-253; abs. in Bot. CenlbL, 98 (1905), No. 1, pp. 

 15, 16). — A preliminary report is given of a disease of oaks which was first noticed in 

 Mecklenburg during the spring of 1904. The cause of the disease is said to be 

 Dolhidea noxia, n. sp., which attacks the branches and twigs of the trees, particularly 

 occurring on young trees. The conidial phase of the fungus is attributed to Fusi- 

 coccum noxum. Technical descriptions of both phases of the fungus are given. It 

 occurs on the living cortex of oaks, but not on beech or chestnut. 



An important disease of lindens, R. Laubert (Ztschr. Pflanzenkrank. , 14 (1904), 

 No. 5, pp. 257-262, pi. 1).—A leaf spot disease of linden trees which appears to have 

 been hitherto imperfectly known is described. It is reported as occurring in various 

 parts of Germany and also in Denmark, and is attributed to the fungus Glceosporium 

 tdeie. The leaves are attacked in May or sometimes later in the year, the fungus 

 causing irregular discolored areas in which the tissues soon die. The microscopic 

 characters of the fungus are described in considerable detail, alter which a discussion 

 is given of its possible relationship with a number of other species of fungi occurring 

 on the linden. 



The author recommends cutting out the diseased leaves and twigs wherever possi- 

 ble and spraying with a 1-2 per cent solution of Bordeaux mixture, the application 

 to be made early in the season before or during the opening of the leaf buds. 



Lenzites abietina on fir, Galzin (Bui. Assoc. Vosgienne Hist. Nat., 1904, No. 6, 

 pp. 89-91; abs. in Bot. Centbl, 96 (1904), No. 51, p. 644).— This fungus, which is said 

 to be rare in the forest, attacks fir timber, penetrating it and injuring it to a consid- 

 erable extent. The changes produced resemble those caused by the dry rot fungus 

 to some extent and the two are said to be frequently confused. The author claims 

 that wood which has been subjected to copper sulphate treatment is not attacked by 

 this fungus. 



