Iris foetidissima variegata

Tommymoo sent me some of this too, its lovely isn't it :-)

Evergreen, so the leaves really shine, even if as Tm says the flowers are insignificant.

It would be interesting to hear if it does flower and set seed - seem to remember from somewhere that the variegated ones are more flowering shy. More attractive leaves though and you can't have everything! Yes the flowers are dull yellow and pretty inconspcuous.