Ptychosperma unknown

For years I thought this was Ptychosperma caryotoides.  Then I looked it up in one of my books and found out that P. caryotoides is a single trunked palm.  So what is this?  I took seeds from some botanical garden here in the islands many many years ago.  Either I mixed up tags or it is a hybred.  Either way it is growing nicely and fruiting for a few years.

The frist picture is from 2001

A little over 6 years later it lookes like this:

Trying to identify it I have the following photos.