Clearly defined spikes and bigger size of the styles are compelling me to go with Gurucharan sir.
This is Persicaria wallichii from me too.
Dr. Ritesh Kumar Chouodhary
International Biological Material Research Center
Korea Research Institute of Bioscience & Biotechnology
111, Gwahangno, Yuseong-gu
"It would be possible to describe everything scientifically, but it would make no sense; it would be without meaning, as if you described a Beethoven symphony as a variation of wave pressure." -- Albert Einstein