Lin if you look carefully on the link that Sandi provided it appears that this is a variety of P. Domesticum. There is a statement "The new cultivar was discovered as a naturally occurring, spontaneous mutation, among several thousand random tissue cultures of Philodendron domesticum. I am pretty sure that your plant is the one in the photo of the link that I sent you and I am pretty convinced that this is a domesticum sport of some sort. Sorry about confusing you with my initial cultivar suggestion.
