Observasjon

Persicaria perfoliata (L.) H.Gross

observert av

K

Kenneth ParkerKenneth Parker

23. juli 2020

Matsuyama, Japan

This herbaceous annual vine in the buckwheat family appears to be missing from the World data bank. Three features make the identification fairly straightforward. The reddish stems are quite spiny; the flower clearly belongs in the Polygonaceae; and the leaves are remarkably triangular in shape. It is native to most of temperate and tropical eastern Asia, and is regarded as a highly invasive weed.