I bumped up this old thread, because I believe that the first pictures I have posted are from Epiphyllum phyllanthus.
There is only that species + its subspecies recorded in the Flora do Brasil for that area.
http://floradobrasil.jbrj.gov....
I have more recent photos from early this year in the same area of the plant with the fruit bodies and they are a match with the image on the Flora do Brasil:
http://reflora.cria.org.br/inc...
The flower called 'Dama da Noite'= 'Lady of the Night' by the locals is a pure white and these are a match too of photos on the web.
I would have loved to see it in flower, but no luck again!
These were taken in the wild, not easy as they were very high up in a tree and I had to crop a lot..