I think you will find these are the seeds looks simular to Apache Plume.

I'm sure it's a type of Albizia....I grew one in my garden a few years ago, when we lived in Northern Spain....I seem to remember the delicate leaves closed up as night fell too.

Thanks to you both. Having received your answers and following up on the web, I think it probably is some type of Albizia.

Thanks again

Albizia julibrissin, called Mimosa east of the Rockies, and Silk Tree west of the Rockies, here in the States.

Tugbrethil, thanks for the extra info, much appreciated,

John