What is "peperomia"

n. any of various plants of the genus Peperomia; grown primarily for their often succulent foliage

Peperomia (radiator plant) is one of the 2 large genera of the Piperaceae family, with more than 1000 recorded species. Most of them are compact, small perennial epiphytes growing on rotten wood. More than 1500 species have been recorded, occurring in all tropical and subtropical regions of the world, though concentrated in Central America and northern South America. A limited number of species (around 17) are found in Africa.