Cnidium monnieri (L.) Cusson ex Juss., Monnier's snowparsley, is a flowering plant species in the genus Cnidium. Also known as Shechuangzi, Osthole, Jashoshi, Cnidii Fructus (Fruits of Cnidium). It may be confused with Bacopa monnieri, Ligusticum officinale (syn. Cnidium officinale), both similar but different plants. The coumarins osthol, imperatorin and xanthotoxol can be found in C. monnieri.

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