I have a nightbloomer with mottled pads, granted they are not heavily mottled or attractively mottled for that matter. more like "hardy" lily mottled.<g> But it is a neotropical nightbloomer in the subgenus Hydrocallis.
My night photography skills are lacking, but at least you get an idea what the flower looks like.
A good mottled night.....I'll mention it next time I talk to my friend Carlos at Kew gardens....he is doing wonders with crosses between the subgenera and has a night/ day cross. I'll just suggest he add the mottled pads.<g>