. The American florist : a weekly journal for the trade. Floriculture; Florists. 13. Volutella, a fruiting stool showing set;i? and stroma. Magaified 30 times more than ttie scale. Fig. 12. AnthracDose (Volutella) on leaf sheaths. From a pen drawing. tate, and do not develop haustoria. Consequently, in order to obtain nutri- ment from the protoplasm of their host they must themselves penetrate the cell walls and pass through the cell. This is in fact the case. The fruiting condi- tion of the Septorla Is also very different from that of the rust. After having consumed the greater part of the nu
. The American florist : a weekly journal for the trade. Floriculture; Florists. 13. Volutella, a fruiting stool showing set;i? and stroma. Magaified 30 times more than ttie scale. Fig. 12. AnthracDose (Volutella) on leaf sheaths. From a pen drawing. tate, and do not develop haustoria. Consequently, in order to obtain nutri- ment from the protoplasm of their host they must themselves penetrate the cell walls and pass through the cell. This is in fact the case. The fruiting condi- tion of the Septorla Is also very different from that of the rust. After having consumed the greater part of the nu- triment at the affected spot the threads at cer- tain centers in the dis- eased area develop into a black oval hollow body, or conceptacle, the open end of which projects slightly above or below the surface of the leaf. A section through one of these conceptacles is shown in figure 9. Prom the inner face of this con- ceptacle short slender fruiting threads, or ba- sidia, are developed which all point towards the center. These ba- sidia bear at their free ends the oblong, curved, colorless, one to three septate, spores. When this gelatinous mass ab- sorbs water the spores are expressed in great numbers out at the opening of the conceptacle, ready to be washed about upon other plants and spread the infection. ANTHBACNOSE OF CARNATIONS. (Volutella sp.) This disease also seems to be very widely distributed in this country, and for the cutting bed at least is one of the most serious enemies of the "divine ; It appears to be a rather recently observed trouble, and conse- quently has not been studied hereto- fore with any degree of seriousness. It has been doubtfully referred to the genus Colletotrichum* and probably for this reason has been termed "; highly magnified. Affected cuttings show dirty brown depressed areas of diseased tissue, pre- senting these same small black fruit stools. These depressed, or shrunken areas of tissue are caused b
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
