Peperomia tetraphylla Hook. & Arn.

in China, Sichuan, Moxi, September 2005 (picture 1)
in NE.India, Darjeeling, Manebhanjan, July 2003 (picture 2)
in Sikkim, Pelling, July 2003 (picture 3)

Description in Bot. Beechey Voy. 97 (1832)