A family of herbs, shrubs, or trees (order Polygonales) chiefly of the north temperate zone having mostly entire leaves with stipules forming a sheath round the stem and flowers that are spicate and apetalous and including the buckwheats.

http://id.loc.gov/authorities/subjects/sh85104634

“Polygonaceae.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Polygonaceae. Accessed 15 Aug. 2026.