Alisma plantago-aquatica subsp.

Alisma orientale, commonly known as Asian water plantain[1] is a flowering plant species in the genus Alisma found in Asia.

[2][3] The rhizomes of A. orientale have been used as a traditional Chinese medicine, ze xie.

[5] The rhizome of the plant is also a herb used in kampo Japanese medicine.

The seed contains cis-aconitic anhydride ethyl ester and cis-2,4,5-trihydroxycinnamic acid.