I found this growing in the Passionfruit Cover. There are two of them at the moment. It is also know as the Eygptian Cotton, Creole Cotton and the scientific name is Gossyplum barbadense.
Read more about it here http://tropilab.com/gossyp-bar.html
6/3/09 update .... the cotton fruits are seen this time round ...so white and can be fluffy too but I took the pic after a rainfall .... so you see it's the cotton is rather dense.