Overview
Rebutia minuscula is a species of cactus from South America found in northern Argentina and Bolivia. It is the type species of the genus Rebutia. As its synonym Rebutia senilis it has gained the Royal Horticultural Society's Award of Garden Merit. Its cultivars 'Krainziana', 'Marsoneri' and 'Violaciflora' are also listed as having gained the Award of Garden Merit. Anderson describes R. minuscula as consisting of globe-shaped stems with a diameter of up to , forming large clusters. The stem has 16–20 ribs with small but distinct tubercles ("bumps"). Each areole produces 25–30 fine whitish spines, long. As in other species of Rebutia, the flowers are not produced at the top of the stem, but from around the base. They are red, up to long.
Subtaxa
The following varieties are accepted: *Rebutia minuscula var. minuscula *Rebutia minuscula var. wessneriana (Bewer.) Eb.Scholz
Synonyms
Since the early 1990s, more than two dozen additional Rebutia species, previously considered independent, have been included in this species. These include the following: * Rebutia chrysacantha * Rebutia marsonerii * Rebutia ionantha * Rebutia knuthiana * Rebutia carminea * Rebutia violaciflora * Rebutia wessneriana * Rebutia xanthocarpa Image:Rebutia chrysacantha kesselringiana 1.jpg Rebutia chrysacantha Image:Rebutia senilis v.stuemeri P249 Khanon s200select.jpg Rebutia senilis v.stuemeri P249 Image:Rebutia senilis iseliana.jpg Rebutia senilis v.iseliana Image:Rebutia sp.
3.JPG Rebutia marsoneri Image:Rebutia krainziana 2.jpg Rebutia krainziana Image:Rebutia krainziana v. albiflora (13972178398).jpg Rebutia krainziana v.albiflora Image:Rebutia grandiflora.JPG Rebutia grandiflora Image:Rebutia kariusiana 1.jpg Rebutia kariusiana Image:Rebutia pink flower D1705.jpg Rebutia ionantha Image:Rebutia violaciflora 1.jpg Rebutia violaciflora Image:Rebutia wessneriana 1.jpg Rebutia wessneriana Image:Rebutia xanthocarpa.JPG Rebutia xanthocarpa