Hoya carnosa, the porcelainflower or wax plant, is an Asclepiad species in the dogbane family (Apocynaceae). It is one of the many species of Hoya that are native to Eastern Asia and Australia. It is a common house plant grown for its attractive waxy foliage, and sweetly scented flowers. H. carnosa has been in cultivation for more than 200 years and has given rise to many cultivars that vary in foliage form or flower color. Recent studies at the University of Georgia have shown H. carnosa to be an excellent remover of pollutants in the indoor environment.