Common name(s) generally applied to other taxa or multiple taxa | black knotweed, sand knotweed, knotweed, knot-weed, knot weed, smartweed, smart-weed, smart weed, buckwheat, buck-wheat, buck wheat, false buckwheat, false-buckwheat, doorweed, door-weed, door grass, door-grass, dooryard grass, door-yard grass, tear-thumb, tear thumb, tearthumb are applied to multiple Polygonaceae taxa; heart's-ease, heart's ease, hearts'-ease, hearts' ease, heartsease, lady's-thumb, lady's thumb, lady's-thumb, ladysthumb are applied to taxa in multiple families |