Buckwheat Honey
H. 'Buckwheat Honey'
Green leaves are broad, shiny & slightly wavy. The registered details do not list this cultivar as having fragrant flowers, whereas other listings do state the flowers are fragrant!

Alternative: H. 'Invincible'
Plant Size
  Small: 10" x 12"  
Leaf
  6" x 3"; green  
Flower
  Pale lavender, fragrant?  
Parentage
  H. 'Ginko Craig' x H. plantaginea  
Buckwheat HoneyBuckwheat Honey