Because of very little information available regarding the poisonous plants distributed in JeiuIsland, the author made a survey of such plants from March, 1974 to Dec., 1977.
The results obtained were as follows:
1. If not all, 68 families, 137 genera and 190 species of poisonous plants distributed in Jeiuisland were classified. And 190 species were divided into 137 sap. of herbs, 45 spp. of shrubs, 3 spp. of molds and 5 spp. of toadstools.
2. Relatively, a Barge number of poisonous plants were distributed in wild field, Jungle area, inhabited region, seashore and high mountainous area took next place gradually by the number of plants.
3. And according to their toxic chemical components or poisoning types, they were classified as 16 spp. of cyanogenetic plants, 14 spp. of oxalate-producing plants, 14 spp. of nitrateproducing plants, 10 spp. of photosensitization and 136 spp. of the other activities.
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