It is a member of the genus "Lunaria" from the Latin word for moon. The stalks of the plant can be gathered after they turn brown, and the outer membranes of the seedpods can be rubbed off to expose the inner circle.
A Favorite with Arrangers and Children
Flower arrangers love them and the transparency of the alternated discs on the stalks is why the plant was also called "Honesty."
A few seeds of the money plant will provide many dividends and produce a lot of interest, which is appropriate given its name. Children are fascinated by it and enjoy rubbing the pods and collecting the dark flat seeds.
The plant's culture is easy; it provides both flowers and material for dried arrangements as well as having an easily remembered name. Even your broker couldn't find you a better investment.