Conium maculatum L.

Japanese: ドクニンジン（英語表記）Conium maculatum L.

A poisonous biennial plant of the Apiaceae family native to Europe (illustration). The stem is erect and branched at the top, reaches a height of 1-1.5 m, is hollow and hairless, and has dark purple spots on the surface. The leaves are finely divided into 3 pinnates and almost opposite each other at the top. In summer, compound umbels are borne at the ends of the branches, and many small white flowers are produced. The flowers are about 3 mm in diameter, have five petals, and the tips are curved inwards, with only one of them being particularly large. The fruits are almost spherical, about 3.5 mm in diameter, and split into two when ripe. When cut into segments, they have an unpleasant odor and contain poisonous substances such as coniine.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ヨーロッパ原産のセリ科の有毒な二年草（イラスト）。茎は直立して上部で分枝し，高さ1～1.5mに達し，中空で毛がなく，表面に暗紫色の斑紋がある。葉は3回羽状に細かく分裂し，上部ではほぼ対生する。夏に枝先に複散形花序をつけ，白い小さい花を多数つける。花は直径約3mm，花弁は5枚，先端は内に曲がり，そのうち1枚だけが特に大きくなっている。果実はほぼ球形で，直径約3.5mm，熟すと2分果に分かれる。分体に切ると不快な臭気があり，コニインconiineなどの有毒成分を含む。

出典　株式会社平凡社世界大百科事典第２版について　情報

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