Tokudama
H. 'Tokudama'
Low, wide plant with heavily corrugated, round blue leaves.
Slow growing but worth the wait. The RHS Plant Finder refers to this as a species.

Alternatives: h. 'Carder Blue', h. 'Julia Hardy', h. 'Moscow Blue'
Plant Size
  Medium: 18" x 44"  
Leaf
  9" x 7"; blue-green  
Flower
  Near white  
Parentage
  Related to h. sieboldiana  
Tokudama