A fruit tree of the Papaya Family.  Photo from near the town of Iguazu, where it is known as Yacaratia.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/92252798@N07">Dick Culbert</a> from Gibsons, B.C., Canada
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/92252798@N07/17140754155/">Jacaratia spinosa</a>