Lin, just wanted to clarify; there are
2 different plants in the pot in Song of Joy's photo, note her caption. Given that, this isn't a plant with light and dark leaves. That's as far as I can go in helping though, sorry.
Here are a few link re: P. domesticum which, while not technically an accepted name, appears to be a hybrid philo developed in cultivation.
GRIN note Distributional range: Cultivated: only cultivated
Kew. Note Distribution: Artificial hybrid or cultivar.
