The Polygonaceae family, or knotweed family, includes around 1,200 species
across 48 genera. Found globally, especially in temperate zones, they feature
swollen stem nodes, alternate leaves with sheath-like stipules, and clustered small
flowers. Buckwheat, a nutritious seed and flour source, is a culinary star of the
family. Other edible members include rhubarb and sorrel, with some species
having medicinal uses. Overall, the family offers nutritional value with seeds rich
in protein and fiber, though some members may contain anti-nutrients (Brandbyge
1993).
