Sapindaceae. Paullinia or Cupania?

I think your image shows the slightly rotten infructescence of a Calathea (cf. altissima) species (Maranthaceae). This is not a vine but a perennial herb.

I. agree with the identification of D. Sattler,  Calathea.

The remains of the inflorescence, the arrangement of the aryl and seeds, the best match  Maranthaceae with the Sapindaceae.

Thank you all for your kind replies!

I assumed it was vine because the rotten peduncle was hanging from above and though I could trace the parental stem up to the canopy I could not detect any other element of the plant. 

When I asked my guide ( of Ticuna tribe ) he refused to give me a native name for the plant or any utilization 

Epameinondas Evergetis

I think this Amazonian fruit belongs to Goeppertia inocephala (Kuntze) Borchs. & S.Suárez

https://www.gbif.org/species/9618107

Thanks!