Summary 2

Polygonum is a genus in the Polygonaceae family. Common names include knotweed, knotgrass, bistort, tearthumb, mile-a-minute, and several others. In the Middle English glossary of herbs "Alphita" (ca. 1400-1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, Buckwheat has sometimes been included in the genus.

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  1. (c) Frank Mayfield, some rights reserved (CC BY-SA),
  2. (c) Wikipedia, some rights reserved (CC BY-SA),

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