Aylostera deminuta
species of cactus
Aylostera deminuta, synonym Rebutia deminuta, is a species of flowering plant in the family Cactaceae, native to Bolivia and northwest Argentina. The exact delimitation of the species varies, but sources agree that it is a short cactus with ribbed stems and orange to red flowers.
Description
Like other members of the clade to which it belongs, Aylostera deminuta usually has fibrous rather than tuberous roots. Its flower parts are fused together, at least at the base. The scales on the pericarpels and receptacles are of the same colour as the receptacles, rather than being darker or having dark tips. The species has been described separately under a number of synonyms, including Rebutia deminuta, Rebutia pseudodeminuta and Rebutia simoniana. As R. deminuta, it is described as forming clumps, with individual ribbed stems about 2.5 cm across, and having deep orange-red flowers about 3 cm long and wide. Other forms are described as solitary, with larger stems (up to about 10 cm high) and somewhat larger flowers, which are orange or carmine red.
Taxonomy
Aylostera deminuta was first described by Frédéric Weber in 1904 as Echinopsis deminuta. In 1923, Britton and Rose transferred it to the genus Rebutia as Rebutia deminuta, and in 1936, Curt Backeberg transferred it to Aylostera.
Begin with the source’s own compact description: “Aylostera deminuta” is species of cactus. The dossier treats that line as a proposition to test through Aylostera, deminuta and species, not as a finished interpretation.
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The phrase “species of cactus” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated May 17, 2026. The linked authority identifier is Q93121645. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1904, 1923 and 1936.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Aylostera deminuta” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.