Here is the real 'Lilly of Valley' orchid only not from Europe but from the Atlantic side of Brazil.. Intermediate grower. I can't seem to get good pictures of small white flowers so go to this site to get an appreciation of what this little beauty is capable off.

http://www.orchidspecies.com/orphotdir/pleurpterophora.jpg

Apparently it repeatedly blooms from old leaves for up to 4 years hence the big bunch of flowers on mature plants.

Nick