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(First upload on January 8 2009. Last on May 14 2020) [ 日本語 | English ]

Conium L. (ドクニンジン) Doku-ninjin (ドクニンジン, 毒人参), poison hemlock or spotted hemlock Lifeform: biennial forb Distribution: native to Europe and the Meditteranean regions biological invasion (生物学的侵入) nowadays, invasive to temperate Asia, including Japan, North America and northern Africa Habitat: grasslands and forest edges (originally in arid lands) HUSTEP: Plants and Plant communities in Japan (flora list)

Leaf: similar with carrot (Daucus carota L.) Flowering: July-September Poisonous plant (有毒植物): stored coniine that is highly poisonous in the whole parts → often misidentified from an edible plant Anthriscus sylvestris Coniine muscle paralysis → respiratory paralysis → loss of life (side sotry: used for the death penalty of Socrates)

Conium maculatum in Hokkaido University Campus

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[1/2] In a forest edge of Keiteki Wood (恵迪の森) on May 21 2009. [3] close-up of stem. purple spots characterize this species and are not developed on A. sylvestris. [4] close-up of leaves. [3/4] in a small florest close to GSEES on June 1 2010. [5] in the Archeological Site (遺跡庭園) of Hokkaido University on March 31 2020.