White coral bells are not lily of the valley, but Heuchera micrantha. Several varieties in plant lists. Heuchera sanguinea is the more common coral-red species.

Lily of the Valley is Convallaria. C. majalis. is the commoner white species, C. rosea is pink.

I would not doubt that non-gardeners mentally confuse the two unrelated plants, both in cultivation since the 17th c.