It's the white picta form of H. 'Patriot'. It's a sport of 'Patriot' with a white center.
It's similar to H. 'Fire and Ice'. This form seems to grow fairly fast.
A reverse form of 'Patriot' from tissue culture. Along with 'Fire and Ice' and 'Loyalist', this is the third form of this type we are aware of. White centered leaves with a green margin. Lavender flowers.