No I hadn't seen the pics of Philodendron ornatum on the Flora do Brasil, Janet, usually they don't have photos..
It's true Philodendron ornatum is really the closest match and the only possible for the region; I guess some slight variations in species can occur..
I had seen the photo on MOBOT during my search, but was still doubting, the flower shown there is a beauty!
I think I'll close this as solved!
for your assistance!
