I think this is *Persicaria chinensis* (L.) H. Gross <https://efloraofindia.com/2011/03/20/persicaria-chinensis/>, as per images and details herein.
---------- Forwarded message --------- From: Shantanu <[email protected]> Date: Saturday, September 17, 2011 at 12:36:42 AM UTC+5:30 Subject: Pink Knotweed To: efloraofindia <[email protected]> Pink Knotweed (Persicaria capitata) Family: Polygonaceae Place: Kolakham, Neora Valley NP. North Bengal. Date: December.2010 regards Shantanu. -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/0d734fbc-2d62-4a9e-a5b1-ae0e90ffb79cn%40googlegroups.com.
