Rebutia is a genus in the family Cactaceae, native to Bolivia and Argentina. Weingartia is now classified as Rebutia.

It was designated in 1895 by Karl Moritz Schumann and named after Pierre Rebut (1828-1898), a French cactus nurseryman. The type species is R.minuscula, which has been in cultivation since 1887. These are generally small, colorful cacti, globular in form, which freely produce flowers that are relatively large in relation to the body. They have no distinctive ribs, but do have regularly arranged small tubercles. They are considered fairly easy to grow and they may produce large quantities of seeds that germinate freely around the parent plant.

From www.cactus-art.biz

All the 60 species of genus Weingartia have been transferred to synonymy status under the genus Rebutia; about 45 or so of them as synonyms of two species, R. canigueralii and R. neocumingii. The genus Weingatia was always considered difficult to differentiate from Gymnocalycium, Neowerdermanniana, and Sulcorebutia and its name has had a very eventful history which evidently continues in controversy today.

Part of the private collection of cacti and succulents at Manor Nursery, Angmering, West Sussex. The collection is open to the public (free of charge) during normal garden centre hours.