Polygonum virginianum

Polygonum virginianum

Polygonum virginianum L.
Engl.: jumpseed, Virginia knotweed.
Suom.: tähkätatar.
Bot. syn.: Antenoron virginianum (L.) Roberty & Vautier, Persicaria virginiana (L.) Gaertn., Tovara virginiana (L.) Raf.

I have no articles for this botanical term, but there might be some for the next level down (if found).