Slender Knotweed
Polygonum tenuePolygonaceae — Smartweed family
Historical native
![Slender Knotweed](/images/080923_100619.jpg)
Nottingham County Park (PA)
September 2008
![Slender Knotweed](/images/polygonum_tenue.jpg)
Nottingham County Park (PA)
September 2006
![Slender Knotweed](/images/polygonum_tenue_3.jpg)
Unionville Barrens (PA)
September 2013
Search Google • Delaware • USDA
Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.