Origin of polygonumModern Latin from Classical Latin polygonon from Gr, kind of plant, knotgrass from poly-, many (see poly-) + gony, a joint, knee: from the many joints
Origin of polygonumNew Latin Polygonum genus name from Greek polugonon knotgrass polu- poly- gonu knee ; see genu-1 in Indo-European roots.
New Latin, from Greek a kind of plant; many + the knee, a joint of a plant. So called in allusion to the numerous joints
The name is probably derived from the Ancient Greek Ï€Î¿Î»ÏÏ‚ (polus, “many") and Î³ÏŒÎ½Ï… (gony, “knee")