History Of The Hoya Plant
The name “Hoya” honors Thomas Hoy, gardener to the Duke of Northumberland and the first to bring this superb house plant into prominence.

Native to southern India, highly prized, and the subject of legend. You’ll find Hoyas throughout eastern Asia to Australia and classified botanically in the asclepias (milkweed) family.

The exact number of species is a mystery. Bailey’s Standard Cyclopedia of Horticulture estimates there are 100 species. Listed at the end of the article are over 550 recoginized species. The most common species, and the one most often seen and grown as a houseplant is Hoya carnosa and Hoya carnosa variegata.

Thick leaves of green, rimmed with red and white, and a waxen texture from which it derives the nick-name “wax plant.”
@source