826 EXPERIMENT STATION RECORD. 



Some fungus diseases of carnations (pp. .384-391), — A i)opiilar paper 

 read before the American Carnation Society, January, 1893, describing 

 carnation leaf spot {Sepforia dianthi), anthracnose {VoluteJla sp.), leaf 

 mold [Heterosporium echinulatnm), and a bacterial disease. Eeiiiedies 

 are suggested for carnation diseases, the most successful ones being 

 sprays of potassium sulj^hid solution, Bordeaux mixture, and animoni- 

 acal copper carbonate. 



Mint rust on cultivated balm (pp. 391, 392). — The mint rust {Puccinia 

 menthce) is reported on the cultivated balm {Melissa officinalis). The 

 form of rust present is the one having echinulate teleutospores and is 

 known as form americana. 



Fungus diseases of ornamental hulhoiis plants (pp. 392-39G). — Dis- 

 eases of lilies, hyacinths, tulips, narcissus, gladiolus, and crocus are 

 described. The rejection of all diseased bulbs is advised as a pre- 

 cautionary measure. 



Diseases of cyclamens (pp. 39G-399). — Diseases due to Phoma cycla- 

 mcnee, Botrytis vulgaris^ Colletotrichum cyclamena', and a bacterial dis- 

 ease are described. 



Diseases of callas (pp. 399-401). — A bacterial disease, one due to 

 Phyllosticta richardiee, a disease due to Cercospora richardia^cola, and 

 another due to Pestalozzia richardice are mentioned. 



Rose anthracnose (pj). 401-405). — In the Annual Report of the station 

 for 1892, p. 280 (E. S. K., o,p.399), mention was made of several destruc- 

 tive diseases of roses, among them an anthracnose due to Olceosporium 

 rosrt', which causes the defoliation of the canes. Further investigations 

 of this disease show that the whole plant is infested by the fungus, 

 which saps its vitality to such a degree that those leaves showing no 

 trace of disease are unable to perform their usual functions. The 

 appearance and habit of growth of this fungus are similar to the rasp- 

 berry anthracnose {G.venetum), and the author suggests their probable 

 identity. Young plants or young shoots are most susceptible to the 

 disease. Eoses that have a sickly colored foliage, with the leav^es falling 

 prematurely, especially from the tips of the canes, may be suspected of 

 being attacked by the anthracnose, and the pink blotches may be seen 

 by the aid of a hand lens on the leaves and stems. All affected canes 

 should be cut, and, together with the fallen leaves, gathered and 

 burned. Sound jilants may be x>rotected by frequently spraying them 

 with Bordeaux mixture or ammoniacal copi)er carbonate. 



A blight of variegated ivy (pp. 405-407). — A blight of the variegated 

 forms of the English ivy is reported due to Vermicular ia. trichella. Ail 

 variegated plants are especially susceptible to fungus diseases, as the 

 etiolated portions are less able to resist the entrance of the spores. 

 All diseased leaves of such plants should be removed and the remain- 

 ing ones protected by sprays of copper compounds. 



Palm diseases (pp. 407-411). — Several diseases of palms, especially 

 Kentias, are figured and described. AU diseased leaves or parts oi 



