Hi Joseph...I was told that ATP uses the Catalog of Life for current family/genus/species names and taxonomy...here is your reference for setting up a new plant in the DB if you haven't done this before.
http://www.catalogueoflife.org...
You would want to set up your "add a new plant" seedling as Merremia bambusetorum Kerr in the database. The link will give you the info you need to add a new plant.