This is a sport of H. 'Royal Mouse Ears' which was registered by
Mark Zilis.
This small plant has a leaf center that changes from a gold
center to creamy white as the summer progresses. Dense clusters
of purple flowers appear in early July.
According to
The Hostapedia by Mark Zilis
(2009), "This was found in the same cultures of 'Royal Mouse
Ears' that produced the white-margined 'Frosted Mouse Ears'. As
a white-centered sport, I had expected it to be a weak grower,
but that has not been the case. It manages a good growth rate in
containers, even as a young plant."
Similar cultivars include H. 'Cat and Mouse'.