Taffeta
H. 'Taffeta'
This tetraploid cultivar has very deep green, shiny leaves that look almost black at times.

Alternative: H. 'Rain Forest'
Plant Size
  Large: 19" x 44"  
Leaf
  9" x 7"; dark green  
Flower
  Purple  
Parentage
  H. ventricosa 'Aureomarginata' selfed  
TaffetaTaffeta