Sicyos angulatus L., a recently known cucurbitaceous plant in Korea, is first found in 1989 to grow quite abundantly in a wild area of Andong, Kyungbuk Province of Korea.
This plant flourishes on humus-rich sandy to loamy soil in the habitat. The morphological characteristics show that leaves are much like common cucumber, Cucumis sativus, pentagonal or heart-shaped, 3 to 5 trenched cirrus, opposite leaf manner per node, flowers in the late August indicating a short-day plant, diclinous and monoecism, and fruits are inferior oval bodies with many prickly hairs clustered each by 5 to 20 fruits having very thin pericarp with one seed per fruit.
Either scarified or a month-stratified seeds of S. angulatus were well germinated. The grafting affinity of S. angulatus with other cucurbitaceous vegetables has exhibited the fact that the fruit yield is as superior as the conventional stock plants, for instance, interspecific hybrids of Cucurbita maxima × C. moschata and C. ficifolia, and it seems to be usable as a stock plant for establishing the grafted against soil-borne pests with various cucurbitaceous vegetables.
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