They call it Chinese Money Plant, Pancake Plant
Easy to grow and to propagate, Pilea is one of the coolest houseplants around.
It gives instant warmth to the home, and it looks perfect when paired with a minimalist design, thanks to those smooth, unusual, modern-looking leaves, which remind of large green coins or small pancakes.
Pilea hates overwatering: it needs to be watered only when the soil dries out: The best way to water is from the bottom, making sure that there's good drainage at the bottom of the pot. Remember to increase your watering when you repot your Pilea in a larger pot!
 
Remember also to feed once a month