Photographed on my property at Shahapur [dead centre in photograph 1, D.bulbifera is to it's left]. It was planted.
D. alata can be mistaken for D.bulbifera [plenty of my photographs of which are available in the archives of this group]. According to Dr. Almeida's 'Flora of Maharashtra', one of the main differences between the 2 is that in the former the "stem climbs to the right" [in a clockwise direction - photographs 8 & 9], whereas in the latter, the "stem climbs to the left" [in an anti-clockwise direction].
Also seen are the characteristic 4 - winged / 4 - angled stems [photographs 5 & 6], often with 'bulb-like' tubers [photographs 6 & 7].
Spoke to Dr. Almeida - this plant does not occur in the wild but is cultivated as the "most esteemed yam of Europeans". As it is an exotic, I will be destroying it.
Also don't think that Surajet Koley's plant posted a few days ago is D. alata.