Polygonum glaucum, common names seabeach knotweedBrako, L., A.Y. Rossman & D.F. Farr. 1995. Scientific and Common Names of 7,000 Vascular Plants in the United States 1–294. and seaside knotweed, is a North American species of plant in the buckwheat family. It grows on the Atlantic Coast of the United States, from Alabama to Massachusetts, including in salt-water inlets such as Chesapeake Bay and the Hudson River.Biota of North America Program 2014 county distribution map
Polygonum glaucum is a branching herb up to tall. It appears silvery of bluish-green because of wax covering the leaves and stem. Flowers are pink or white, produced in groups of 1–3. It grows on beaches, sand dunes, and the edges of coastal marshes.Flora of North America, Polygonum glaucum Nuttall, 1818. Seabeach knotweed
References