. Fig. T^.âKhytisma accrinutn. 1, sycamoie leaf with blotches caused'by fungus ; 2, section through a blotch bearing conidia ; 3, ascus with spores, also two para- physes ; 4, an ascosporc. Figs. 2-4 mag. and indirectly. Several large patches are frequently present on a leaf, and as a rule, when the disease is present, nearly every leaf is attacked, hence a considerable area of leaf surface is prevented from doing its work. In addition diseased leaves fall early, and as the disease, unless checked, appears year after year, the tree bet'omes enfeebled owing to lack of food, and badly matured wo
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. Fig. T^.âKhytisma accrinutn. 1, sycamoie leaf with blotches caused'by fungus ; 2, section through a blotch bearing conidia ; 3, ascus with spores, also two para- physes ; 4, an ascosporc. Figs. 2-4 mag. and indirectly. Several large patches are frequently present on a leaf, and as a rule, when the disease is present, nearly every leaf is attacked, hence a considerable area of leaf surface is prevented from doing its work. In addition diseased leaves fall early, and as the disease, unless checked, appears year after year, the tree bet'omes enfeebled owing to lack of food, and badly matured wood, when it easily falls a prey to a yet more dangerous parasite, the coral spot fungus {Ncctria cinnaharifta), which often follows an epidemic of leaf blotch. When the diseased leaves have fallen, the tree is perfectly clear of the fungus, and the only possible means of further infection is due to spores alighting on the young leaves, and