About Aylostera deminuta (F.A.C.Weber) Backeb.
Aylostera deminuta (F.A.C.Weber) Backeb. usually has fibrous rather than tuberous roots, which matches the trait of other members of its clade. Its flower parts are fused together, at least at their base. The scales on its pericarpels and receptacles are the same color as the receptacles, rather than being darker overall or having dark tips. This species has been published under multiple separate synonyms, including Rebutia deminuta, Rebutia pseudodeminuta and Rebutia simoniana. When described as Rebutia deminuta, it is noted to form clumps, with individual ribbed stems around 2.5 cm across, and deep orange-red flowers that are around 3 cm long and wide. Other described forms are solitary, with larger stems that grow up to about 10 cm high, and somewhat larger flowers that are orange or carmine red. Aylostera deminuta is native to Bolivia and north-western Argentina. It grows alongside related Aylostera species on the eastern side of the Andes, in montane dry forests, shrublands and dry puna grasslands.