Monadenium rubellum is a member of the Euphorbiaceae family. It was given this name by Susan Carter in 1987. It is from the Machakos District of Kenya, a tropical part of Africa where it grows in a well drained soil and filtered sun. This species has a thick woody caudex from which arise thin, succulent, and striped stems. The leaves are obovate and succulent, and the cyathia are pink-red. The caudex will get up to 2.5 inches in diameter and the stems can reach a foot long. Monadenium rubellum can be rot prone so keep on the dry side. They grow quickly from cuttings and can produce a nice tuber in a couple of seasons.