. Fio. 115.—Ploirriiihtia mor- hosa. Ascus, with eight spores. Spores in germinn- tion. jwira- physes. (Cop. fnmi F!\rlo\v.) Fig. 114.—Plowrightia morbosa. (v. Tubeuf phot.) injurious and widely distributed disease of various species of Prunas, especially plum and cherry. The living branches and twigs become coated with a crust of warty excrescences, and at the same time are more or less thickened and deformed. A mycelium permeates the tissues of those swollen twigs, and forms black crusty stromata in which the perithecia are embedded. The perithecia contain simple paraphyses and
. Fio. 115.—Ploirriiihtia mor- hosa. Ascus, with eight spores. Spores in germinn- tion. jwira- physes. (Cop. fnmi F!\rlo\v.) Fig. 114.—Plowrightia morbosa. (v. Tubeuf phot.) injurious and widely distributed disease of various species of Prunas, especially plum and cherry. The living branches and twigs become coated with a crust of warty excrescences, and at the same time are more or less thickened and deformed. A mycelium permeates the tissues of those swollen twigs, and forms black crusty stromata in which the perithecia are embedded. The perithecia contain simple paraphyses and eight- spored asci. The spores consist of a larger and a mucli smalk-r cell. (Pycno-conidia arc produced frequently in artificial culture, 1 Fallow, Bulletin Bussey Institution, Part v., 1876. Humphrey, Animal Report of Mans. Exper. Station, ISOO. Lodeman (Cornell Uvii: Exper. Station. Bulletin No. 81, 1894) general account of Black-knot and a Bibliography.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
