Persicaria capitata (Buch.-Ham.) H. Gross

in Nepal, near Dunche, june 2000 (picture 1)
in Sikkim, Pelling, july 2003 (picture 2)
in China, Sichuan, Moxi, september 2005 (picture 3)

Description in Bot. Jahrb. Syst. 49: 277. 1913