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<big>''[[Persicaria orientalis]]'' (L.) Spach</big>
__NOTOC__
:Family: Polygonaceae
== Synonyms ==
*''Polygonum orientale'' L.
== Vernacular names ==
*Prince's feather (En). *Persicaire de Levant (Fr)
*Thailand: phakuang
*Vietnam: nghể bà, nghể dông.
== Observations ==
*Erect or ascending annual herb, 0.5-1 m tall. *Leaf-blade ovate-oblong, 5-20 cm × 3-12 cm, hairy on both sides; petiole 2-6 cm long. In humid places, dried-up pools and ditches, often gregarious, up to 850 m altitude.
== Selected sources ==
