Dave: Thanks, that looks just like my plant but I'm not certain P. cordatum is correct. When I do a search for Philodendron cordatum 'Lemon Lime' many of the responses show the smaller heart leaf Philodendron so I'm confused.
This is the one photo in the ATP database, a different plant than what I've got:
We only have one listing for P. cordatum in the database, no cultivars:
