Epiphyllum oxypetalum is a night-flowering cactus that needs to use all means possible to attract nighttime pollinators. So it produces enormous flowers that are very pale, to show up in the dark, and emits a powerful aroma. To appreciate them you need to stay awake as they open late and by the morning are hanging like limp rags.
I don't have a current photo of ours but we do also possess a number of the many hybrids that have been bred from the species. These have the benefit of being more colourful than the parent, open during the day and stay open for as long as 3 days. On the down side they have lost the amazing scent.
We have;
Madagascar
Orange Crush
Desert Moon
King Midas
and also Elektra, JT Barber, Ambrosia.