Hepatica nobilis ex 'Claudia' is certainly interesting. I was gifted it from my friend who bought some seeds from Severin Schlyter a long time ago and she grew them beautifully. It is not a vigorous plant, it is actually slow growing but considering how rare it is and its great potential for breeding it is worth the extra effort.
All parts of the plant are pigment-free (albino form)
In addition to being albino, the leaves have a very interesting shape.
Severin described 'Claudia' as an "albino crenatilobe form with slotted leaves and white flowers” in the Swedish Garden Society "Trädgårdsamatörerna" in 2005. In addition to that, however, my plant has shaggy sepals and interesting anthers.