The following have tripartite seedling leaves: A. heterophyllum A. tortuosum A. sikokianum A. yamatense v sugimotoi One A. triphyllum 'Zebrinum' seedling has 4 petioles. Three A. franchetianum have 2 petioles. One " has 3 petioles. MJ Hatfield zone 4b, middle of Iowa, US