Peperomia argyreia, the watermelon peperomia or watermelon begonia, is a species of flowering plant in the family Piperaceae, native to northern South America, including Bolivia, Brazil, Ecuador, and Venezuela. The plant is not closely related to either watermelons or begonias

HOW TO CARE:
Temperature: Prefers temperatures of 65-75ºF (18-24ºC), and no lower than 50ºF (10ºC).
Light: A bright room with the plant placed in a shaded spot is ideal, without direct sunlight.
Watering: It's important not to water these plants too much or underwater them. Over-watering can cause rot and under-watering will make them wilt. To get watering just about right, allow the soil to dry to the touch at the top and then water thoroughly, but much less during winter.
Humidity: Average indoor humidity should be fine. You can mist the leaves every now and again during summer months if the air becomes dry. Being around other indoor plants will improve humidity.