Difference between Bellina and Violacea

[BlueRoom]

Vendor labelled this as a Phal Bellina F.Alba but it looks more like a Violacea to me based on the leaves and the size of the bloom.

Pls see pic enclosed.

How do I tell the difference between a Bellina and Violacea? I realize they are quite similar but what is the subtle difference in care?

Growing conditions
Toronto, Canada*
Condo living
Southwest sun room
Vendor sent it in spaghum and sprinkled perlite
Watered weekly (soak bottom 1/2 inch for 20 mins)
Fertilize with Kelpmax weekly and bloom fertilizer mthly
Heat-mat and small LED lighting during winter

*Bellinas are a challenge for me but I seem to do better with Violacea