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The morphological characters of the leaves, flowers and fruits as well as the growth of vines and fruits of the Korean native bottle gourds (Lagenaria siceraria) collected from around the country, differing from shape and size, were investigated. There were four types of leaves which have different shapes, but no differences were observed in pollen and trichomes. The flower shapes of male or female flowers were markedly different, and these can be divided into six groups by the marginal shape and size of petals. The growth of fruits and vines was also very different among the native varieties. The stem length of ´Koseong´ was over 20 m, and that of ´Habcheon´ was under 10 m. Genetic diversity exists not only in fruit shape such as globe, oval, pyriform, club-shaped and dipper-shaped, but also in fruit size such as ´Dangjin´ 17,050 mL and ´Jeongseon´ 746 mL. The rind color of fully ripe fruits showed nearly pale yellow-green while the ´Dangjin´ remained deep green.
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