mile-a-minute weed

Persicaria perfoliata is a synonym for Polygonum perfoliatum, a species of flowering plant in the buckwheat family. Common names include mile-a-minute weed, devil's tail, giant climbing tearthumb, and Asiatic tearthumb. It is a trailing herbaceous annual vine with barbed stems and triangular leaves. It is native to most of temperate and tropical eastern Asia, from eastern Russia in the north down to the Philippines and India in the south.