1) The outline of the patho-physiologic disturbances of the spotted leaves were studied by the iodine method. 2) Within the periphery o f the spot prevented from the vascular bundles or scarcely connected with them, there is found the region of no starch grains of 1-3 mm in widst. 3) The spots, communicated by the diseased vascular bundles with healthy tissue, are accompanied by the wide regions which indicate extensive disappearance of the starch grains. 4) More starch grains ar e found around the spots, induced by Cercospora spp. and Cladosporium sp. 5) Translocation of assimilated starch grains was disturbed in some kind of spotted leaves.
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