Americana
H. 'Americana'
Leaves are very stiff and horizontally flattened with white centers resistant to melting out - very dark green margins.
Quite a dramatic new introduction.

Alternative: H. 'Clifford's Stingray'
Plant Size
  Medium: 15" x 15"  
Leaf
  7" x 5"; dark green, white margins  
Flower
  Lavender  
Parentage
  Sport of H. 'Loyalist'  
AmericanaAmericana