Flower ID Appreciated

[Ed Cordes]

This image was made in Scotland a few years ago. It was in an arboretum, so I really don't know if the flower is native to the UK. It is beautiful, bit I just can't get a positive ID. any assistance would be much appreciated.

 

[Hali]

According to "picture this" my iphone app it's called Afterglow Echeveria, known as the white cloud plant. It is gorgeous, Ed!