Stephania rotundifolia is a very unique plant. It is popular, not only for its beautiful round leaves or its gorgeous orange flowers. Its main attractiveness comes from its bulb - that somewhat resembles a tortoise. The bulb can be formed in various ways by, for example, limiting its space.
Stephania's prefer a limited amount of water and filtered sunlight. Under the right circumstances, they can reach over 50 years of age. Do mind its winter hardiness, however. It is best kept as an indoor plant - though you can of course keep them outside during summer.