A Vietnamese bonsai from the Ha Noi Association of Ornamental Creatures exhibiting at the Van Mieu-Quoc Tu Giam (Temple of Literature), Hanoi, Vietnam. This bonsai is a Ficus elastica. Ficus elastica, also called the rubber fig, rubber tree, rubber plant, or Indian rubber tree is a species of plant in the fig genus, native to northeast India (Assam), south to Indonesia (Sumatra and Java).