The cross between E. gigantea and E. palustris is called E. Sabine. 'Enchantment' seems to be a clone of gigantea, not the cross. It might be that the label on your plant is missing an 'x'. I'd go back to the seller and ask if it should be an Epipactis Sabine made from a cross between these two: Epipactis palustris x Epipactis gicantea 'Enchantment'.
