tardiflora
H. 'Tardiflora'
Was considered a species but it looks like it originated in cultivation
Satiny dark green; thick, lanceolate, flat blade; upright; red scapes.
RHS still list this as a species in the Plant Finder.

Alternative: H. 'Nicola'
Plant Size
  Small: 12" x 36"  
Leaf
  7" x 3"; dark green  
Flower
  Lavender with white margins  
Parentage
  Seedling of H. longipes lancea  
TardifloraTardiflora