Siargao Zingiber Project - Sidelining

For the first time, I got up off my bum, and went myself with my crew (Ron & Shedney), to find some new and exotic ginger plants reasonably nearby.
We went to Victor's Flying Fox Bar, built, like only a total crazy could do, out in the boonies, opposite a perfect jungle mountain, where the flying foxes do a grand fly-past every evening, dead on time at 2.5 minutes past dusk.

We walked along the edge of the mountain, and we did find a couple of new ginger plants (which I'm waiting to have identified).
But, more than that, we found some other strange plants that I don't have much of a clue about:

This is wild ubi, a purple yam, that, domesticated, is a great favourite here in the Philippines. It's even a top flavour for ice cream. Purple ice cream? It's delicious. Only in the Philippines.

And we found these, abandoned: Puso banana buds, but only the stripped skins, the buds taken off to make into a fabulous salad.

And then this one, known locally as padjaw. It's an aroid, but I don't know much more about it, and I don't know why it grows 'pretend peppers'.