Name: Daisy I Reno, Nv (Zone 6b) Not all who wander are lost
According to Catalogue of Life, Philodendron Selloum and P. bipinnatifidum var. lundii are both synonyms for Philodendron lundii. No mention of Thaumatophyllum except T. spruceanum is a synonym for Philodendron goeldii. That's a weird looking one! I think you should change your mind about your dream plant.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost
President: Orchid Society of Northern Nevada
Webmaster: osnnv.org