Hedychium calcaratum A.S.Rao & D.M.Verma, Bull. Bot. Surv. India 11: 120 1969 publ. 1971. ;
Assam as per POWO;


ID please 21092012 SR-1: 2 correct images as above.
ID please
Place-Lava, Darjeeling, West Bengal

Leaves are similar to zinger.

I think Hedychium gardnerianum (Zingiberaceae).

I have another two pictures of this flower. the single flower i post here was taken at another place where i did not see the whole inflorescence. I wish i could capture the habitat.

The photo no.1 is  and 2. is H. calcaratum A.S. Rao and D.M. Verma.