Need help to identify this tuberous ant plant. The seller said it came from Cameron Highlands. The plant was growing in the seller's roadside stall for a year, which is in Cameron Highlands.
Is this H. formicarium? I was just wondering as the leaves seems to be more slender...

Here's a leaf of a H. formicarium plant that I got from Andy. Notice that it is rounder. Does different growing conditions affect how it looks?
The whole plant...
The tuber of the plant from Camerons...

The tuber of the H. formicarium from Andy
It does not seem to be M. tuberosa as it has two branches and the tuber is smooth with bumps unlike M. tuberosa which has tiny thorns on its tuber.