Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 CYLINDROSPORIUM. 489 As yet the disease has beeu observed in quantity only in the neighbourhood of Oberammergau (Upper Bavaria). C. padi Karst. Leaf-blight of cherry and plum. This dis- ease is most destructive in the nursery, causing premature defoliation of young trees; it may also cause severe injury to fruit-bearing trees. The leaves become spotted and perforated by holes caused by the falling out
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplant00tube Year: 1897 CYLINDROSPORIUM. 489 As yet the disease has beeu observed in quantity only in the neighbourhood of Oberammergau (Upper Bavaria). C. padi Karst. Leaf-blight of cherry and plum. This dis- ease is most destructive in the nursery, causing premature defoliation of young trees; it may also cause severe injury to fruit-bearing trees. The leaves become spotted and perforated by holes caused by the falling out of withered spots. Spraying with dilute Bordeaux mixture early in the season is said to have good effects. Fig. 300.—a fruit from Fig. 299 (enlarged). A, Two pustules still further enlarged. B, Pustules before and after rupture of the epidermis. C, Isolated conidia. (v. Tubeuf del.) C. filipendulae Tliiini. occurs on leaves of Spiraea Filipendula. C. ficariae Berk. On leaves of Ranunculus Ficaria. (Britain.) C. viridis E. et E., and C. minus E. et E. On leaves of Fraxinus ciridis in the United States. C. cercosporoides E. et E. On living leaves of tulip-tree. C. saccharinum E. et E. On living leaves of Acer saccharinum in the United States. Cryptosporium. Conidial cushions shaped like pycnidia. Conidia rod-like or spindle-shaped. Cryptosporium leptostromiforme This fungus forms rows of l.)lack stromata on the stems of lupines; in the stromata are formed pycnidia-like cavities with several neck-like openings, and in them conidia are given off from conidiophores. The conidia are rods with rounded ends 7-8'5ya long and about 2 broad : they emerge from the necks of the cavities as long tendril-like chains, and may be given off Fairchild [Journal of Mycoloi/y, vii., p. 249) gives results of remedial treatment. -J. Kiihn, Berirhte d. lancUnrth. InM., Halle, 1880. Fischer, ' Crypto-poriu?n leitostromiformt.' Breslau, 1893.
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