Scleranthus savioi

This plant was given to me by a customer many years ago and I have never seen it anywhere else, neither am I sure of its naming. Some of its characteristics are closer to Sagina than Scleranthus.
A mat forming plant with distinctive gold and very soft foliage, the tiny white flowers are borne in early summer. Its not a hardy plant in the garden but does very well in pots. I suspect in hot climates this one is probably best grown with morning sun only.