A perennial plant of the Ranunculaceae family. It is found in the warm temperate zone from Kyushu to Honshu, growing on the forest floor or forest edges of deciduous broad-leaved trees. The underground stem spreads horizontally, and in early spring, a flower stalk or a basal leaf emerges from the end of the stem. The flower stalk grows to a height of 20-30 cm, and has three whorls of tripinnately pinnately compound leaves at the top. The basal leaves have long stalks and are tripinnately compound leaves arranged once or twice. It blooms as the leaves unfold, and a single white flower about 4 cm in diameter appears at the terminal end of the flower stalk, from which the Japanese name comes. The five sepals are broadly elliptical and white, and look like petals. The stems and leaves wither in early summer. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
キンポウゲ科の多年草。九州から本州の暖温帯に分布し,落葉広葉樹の林床や林縁に生える。地下茎は横にはい,早春,その先から花茎あるいは根出葉を1本出す。花茎は高さ 20~30cmになり,上部に3出した羽状複葉を3枚輪生する。根出葉は長い柄があり,1~2回の3出羽状複葉である。葉の展開とともに開花し,花茎に径 4cmほどの白色の花を1個頂生する。これが和名の由来である。5枚の萼片は広楕円形で白く,花弁のように見える。茎や葉は初夏には枯れてしまう。
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