Erythrorchis altissima (Blume) Blume, Rumphia 1: 200 (1837) (syn: Cyrtosia altissima Blume; Erythrorchis ochobiensis (Hayata) Garay; Galeola altissima (Blume) Rchb.f.; Galeola ochobiensis Hayata; Haematorchis altissima (Blume) Blume; Vanilla taiwaniana S.S.Ying);
Assam to Japan (Islands off S. Kyushu)and Malesia: Assam, Borneo, Cambodia, East Himalaya, Hainan, Japan, Jawa, Laos, Malaya, Myanmar, Nansei-shoto, Nicobar Is., Philippines, Sumatera, Taiwan, Thailand, Vietnam as per POWO;
Video from prg: 1 MP4 file.
An interesting plant. Very rare. May be a parasite.
I think it is Erythrorchis altissima (Orchidaceae)
Very interesting. It is indeed a member of Vanilloideae and most likely Erythrorchis altissima known from Northeast India. This is not a parasite.
Would be good to see flowering plants.
I found it is more close to Galeola sp
It could be Galeola or Erythrorchis.
Cant confirm without flowers.