Any of numerous plants of the genus Polygonum and several closely related genera of the family Polygonaceae, characterized by stems with knotlike joints and sheathing stipules.
Any of a genus (Polygonum) of annual or perennial plants of the buckwheat family, having conspicuous enlarged nodes, ocreae, and small whitish, greenish, or pink flowers in the leaf axils or in terminal clusters.
Origin of polygonum
- New Latin Polygonum genus name from Greek polugonon knotgrass polu- poly- gonu knee genu-1 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- The name is probably derived from the Ancient Greek Ï€Î¿Î»ÏÏ‚ (polus, “many") and Î³ÏŒÎ½Ï… (gony, “knee")
- New Latin, from Greek a kind of plant; many + the knee, a joint of a plant. So called in allusion to the numerous joints