844 EXPERIMENT STATION EECORD. 



Dry leaf of the grape, M. Ttjbconi {Riv. Patol. Veg., 6 {1913), No. 9, pp. 260, 

 261). — ^A leaf disease of the grape near Pavia, characterized by premature 

 drying, and noted in some American varieties, is ascribed to Pestalozzia 

 uvicola. 



Base rot of pineapples (Agr. News [BarMdos], 12 (1914), No. 816, p. 190). — 

 In a locality not known to have produced pineapples previously, cuttings care- 

 fully disinfected with Bordeaux mixture before planting developed a diseased 

 condition, apparently due to Thielamopsis paradoxa. It is thought that the 

 presence of the fungus may be due to a previous cultivation of sugar cane in 

 these places or perhaps to the use of organic manure. There is said to be some 

 evidence that plants sometimes throw off the disease. Development of resistant 

 strains is suggested. 



Decay of pineapples {Agr. News [Bariados], 13 (1914), No. 318, p. 222). — In 

 continuation of the above discussion another pineapple disease is discussed, 

 ascribed to the same causal organism, which frequently enters through the cut 

 end of the stem and passes with great rapidity up through the core, spreading 

 through the softer tissues and producing a water-soaked appearance; also 

 entering readily through wounds and bruises and even through the uninjured 

 fruit surface. 



Care in handling includes cutting off and searing or waxing the stems. The 

 fruit should cool and dry for 24 hours before packing, and should be protected 

 from bruising or rubbing without greatly interfering with the circulation of 

 air. Fumigation with formaldehyde gas has been found helpful, and directions 

 for this are given. 



Cladosporium disease of Ampelopsis tricuspidatum, M. T. Cook and G. W. 

 Wilson {Phytopathology, 4 (1914), ^^o. 3, pp. 189, 190, fig. 1). — In continuation 

 of a previous note (E. S. R., 31, p. 347), the authors report having had their at- 

 tention called to the dying of Japanese i\'y on buildings of Rutgers College and 

 other buildings in the vicinity. 



The disease first appeared as a wilting of the leaves, which might be con- 

 fined to a small branch or might extend to a main trunk and all Its branches. 

 Within a few days all the diseased parts were dead and diT- A fungus was 

 Isolated from diseased material, and it was found to agree rather closely with 

 the description of what is usually given as C. Jierbarum. 



Spontaneous decapitation of chrysanthemums, R. Faeneti (Riv. Patol. 

 Veg., 6 (1913), No. 10, pp. 289-292) .—YaW of the floral heads of crysanthemums 

 at flowering, due to rupture of the peduncles, led to a study of the phenomenon. 

 It Is thought that an irritative and toxic influence is exerted by a Cladosporium 

 found in connection with the trouble, also that a part is played by turgescense 

 at such times. 



Black rot of roses, J. Beauveeie (1. Cong. Internat. Pathol. Compar6e [Paris'^, 

 1912, vol. 2, Comp. Rend., pp. 965-967, fig. 1). — Reporting on an examination of 

 diseased roses sent in for this purpose, the author states that the flowers show- 

 ing the peduncle disease formerly attributed to Botrytis clnerea (B. S. R., 24, 

 p. 351) now showed no mycelium In the diseased peduncles, and that these por- 

 tions, when kept in a confined atmosphere, either dry or moist, produced no 

 Botrytis, but that this fungus was noted in adjacent green portions. Further 

 investigation, as regards the immediate nature or cause of the disease and its 

 remedies, is considered necessary. 



A study of a rose disease, J. Beauveeie (1. Cong. Internat. Pathol. Com- 

 par6e [Paris'^, 1912, vol. 2, Comp. Rend., pp. 968-971, figs. 2).— A brief account 

 is given of a disease of roses attributed to Coryneum microstictum. 



A GloBOsporium disease of the spice bush, J, J. Taubenhaus (Atner. Jour. 

 Bot., 1 (1914), No. 7, pp. 340-342). — The author reports on a study of diseased spots 



