How far into the wild was that, Pitter? I'd be betting on a Philodendron of some description, rather than non-native Alocasia. But yes, definitely an aroid. Let me check the species survey of your department (I think I've got it) and maybe something will turn up. You don't have more photos of it, do you?
Lorax it´s far enough into the woods I don´t think it´s an escapee. What should I try to get in more photos?
The underside of the leaves, the petiole (leaf stem) and how it joins to both the true stem and the leaves, the stem, and if you could find an inflorescence that would help immensely. I do have the Aroid survey of Narino (huzzah!) and with those things plus a few measurements (leaf length, width, texture, petiole length and shape in cross-section) I should be able to narrow it down.
I do have the first two parts of the Aroid flora of Narino (La Planada Reserve survey), so here's what I'd need. Photos of: the underside of the leaves, a good closeup of the edge of a leaf (to check for venation), the petioles, the stem (if present), and an inflorescence (if you're so lucky as to find one.) I'd also like measurements of the length and width of the leaf, its texture (is it waxy, leathery, papery?), the length and width of a petiole, and the cross-section of a petiole from a mature leaf. If you find an inflorescence, measurements on it would help too. If I can't figure it out from my keys, I can ask Dr. Croat about it - he'll likely recognize it immediately.
Ok it stopped raining. The largest leaf measured 15.5cm l. x 11.5cm w. Here are detail images of the plant:
Sure looks like a Philodendron to me too. Perhaps compare to P. verrucosum? Here is another, showing a similar shade of red on the back of the leaf.
