Buckwheatlike

The rather small, compounded cymes of usually pinkish flowers appear from June to October, the buckwheatlike fruits maturing and disseminating from September to November.

Erect knotweed (Polygonum erectum) has a buckwheatlike grain that seems to have undergone selection for size and for reduction of the numbers of thick-walled fruits produced on the same plants as fruits with thin pericarps […]