. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). 28 Bulletin 125. July the blighted twigs often have their bark ruptured, and through the rifts there is to be seen a somewhat brick-colored fungus growth. Upon ex- amination with the compound microscope, this red development is found to be the spore-bearing organs of a highly organized fungus belonging to the genus Ncclria. This geims is not an unusual one among the fungi that are harmful to higher plants. . The one upon the currant, when it seems to be deeply seated and does much damage, is nearly related
. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). 28 Bulletin 125. July the blighted twigs often have their bark ruptured, and through the rifts there is to be seen a somewhat brick-colored fungus growth. Upon ex- amination with the compound microscope, this red development is found to be the spore-bearing organs of a highly organized fungus belonging to the genus Ncclria. This geims is not an unusual one among the fungi that are harmful to higher plants. . The one upon the currant, when it seems to be deeply seated and does much damage, is nearly related to the Nedria chmabaria, Tode, which is common on various ; The effects of the disease in New Jersey are thus seen to be nearly identical with those ob- ser\'ed in Chautauqua County. Cultivation of the Tubercularia. On November 16th, 1896, another package of diseased currants was re- ceived from ]Mr. Wilcox. The canes were badly affected, being thicklj studded, especially about the lower ends, with the pink cushions of Tiiber-. 5. Germinating conidia of Tubercularia. Portion of mycelium producing secondary conidia. cularia. The stems were covered and allowed to stand for a day in a moist place, so that the cushions were well moistened and swollen out. In order to avoid contamination as much as possible the spore-bearing tops of several of these cushions, after being shaved off with a sterilized scalpel, were crushed in boiled water on a flamed glass slip. Vast numbers of conidia ?were present. Dilution cultures of these were then made in acidified potato- agarin the usual manner. This was done in order that the germination of the conidia, and the development of the mycelium in artificial culture media might be studied. After twenty hours the spores had begun to germinate freely. The various stages of germination are illustrated in Figure 6. In this process the spore first swells to more than twice its original size through the absorption of moisture. A small protrusi
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