Leathery Knotweed (Polygonum achoreum)
Polygonum Achoreum, or more commonly know as Leathery Knotweed, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) of the genus Polygonum. Its duration is annual which means it grows for one season only. Polygonum Achoreum or Leathery Knotweed's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Colorado, Connecticut, Iowa, Idaho, Illinois, Indiana, Maine, Michigan, Minnesota, Missouri, Montana, North Dakota, Nebraska, New York, Ohio, Oregon, Pennsylvania, South Dakota, Vermont, Wisconsin and Wyoming.
