# Aylostera

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Species of flowering plant

Aylostera Aylostera deminuta Scientific classification Kingdom: Plantae Clade: Embryophytes Clade: Tracheophytes Clade: Spermatophytes Clade: Angiosperms Clade: Eudicots Order: Caryophyllales Family: Cactaceae Subfamily: Cactoideae Tribe: Cereeae Subtribe: Aylosterinae Genus: Aylostera Speg. Type species Aylostera deminuta Synonyms[1] Digitorebutia Frič & Kreuz. ex Buining Mediolobivia Backeb.

***Aylostera*** is a genus of [cactus](/source/Cactus), native to central Bolivia and north western Argentina.[1] *Aylostera* was formerly sunk into a broadly [circumscribed](/source/Circumscription_(taxonomy)) genus *[Rebutia](/source/Rebutia)*, but [molecular phylogenetic](/source/Molecular_phylogenetics) studies from 2007 onwards showed that when defined in this way, *Rebutia* was not [monophyletic](/source/Monophyly), leading to the resurrection of *Aylostera*. A 2023 classification of the tribe [Cereeae](/source/Cereeae) placed it as the only genus in the subtribe **Aylosterinae**. It was formerly placed in the subtribe [Rebutiinae](/source/Rebutiinae).

## Description

*Aylostera* species are small cacti with globular stems. The stems may or may not have ribs; this feature can vary even within a species. Their flowers are of various colours. A key feature that distinguishes *Aylostera* from *Rebutia* is that the [pericarpels](/source/Hypanthium) and [receptacles](/source/Receptacle_(botany)) (which together form a structure that is often referred to as the 'flower tube') are hairy, rather than [glabrous](/source/Glabrousness#In_botany).[2]

## Taxonomy

The genus *Aylostera* was erected by [Carlo Luigi Spegazzini](/source/Carlo_Luigi_Spegazzini) in 1923.[1] A historical summary of the treatment of *Aylostera* and related genera published in 2011 showed how in succession it was recognized, sunk into *Rebutia*, and then resurrected to include a large part of *Rebutia*.[3] A phylogenetic study in 2016 using both molecular and morphological characters confirmed that *Aylostera* was monophyletic and distantly related to the clade that contains the type species of *Rebutia*, thus justifying recognizing it as a separate genus.[2] The separate status of *Aylostera* is accepted by [Plants of the World Online](/source/Plants_of_the_World_Online), as of December 2024[\[update\]](https://en.wikipedia.org/w/index.php?title=Aylostera&action=edit).[1]

In a 2023 classification of the tribe [Cereeae](/source/Cereeae), it was placed as the only genus in the subtribe Uebelmanniinae, having formerly been placed in the subtribe [Rebutiinae](/source/Rebutiinae).[4]

### Species

The number of species accepted in *Aylostera* varies considerably. The 2016 study of the genus accepted only nine species, including a very broadly circumscribed *[Aylostera deminuta](/source/Aylostera_deminuta)*.[2] As of December 2024[\[update\]](https://en.wikipedia.org/w/index.php?title=Aylostera&action=edit), Plants of the World Online accepted 26 species:[1]

Image Scientific name Distribution Aylostera albiflora (F.Ritter & Buining) Backeb. Bolivia. Aylostera albopectinata (Rausch) Mosti & Papini Bolivia. Aylostera atrovirens (Backeb.) Mosti & Papini Bolivia to Argentina Aylostera deminuta (F.A.C.Weber) Backeb. Bolivia to Argentina Aylostera einsteinii (Frič) Mosti & Papini Bolivia to Argentina Aylostera fiebrigii (Gürke) Backeb. Bolivia to Argentina Aylostera flavistyla (F.Ritter) Mosti & Papini Bolivia Aylostera fusca (F.Ritter) Mosti & Papini Bolivia. Aylostera heliosa (Rausch) Mosti & Papini Bolivia. Aylostera hoffmannii (Diers & Rausch) Mosti & Papini Bolivia to Argentina (Salta) Aylostera kupperiana (Boed.) Backeb. Bolivia (Tarija) Aylostera leucanthema (Rausch) Mosti & Papini Bolivia (Chuquisaca) Aylostera malochii (Slaba & Lad.Fisch.) Ritz Bolivia. Aylostera mamillosa (Rausch) Mosti & Papini Bolivia Aylostera mandingaensis R.Wahl & Jucker Bolivia. Aylostera muscula (F.Ritter & P.Thiele) Backeb. Bolivia (Tarija) Aylostera narvaecense Cárdenas Bolivia (Tarija) Aylostera nigricans (Wessner) Mosti & Papini Argentina Aylostera perplexa (Donald) Mosti & Papini Bolivia. Aylostera pseudominuscula (Speg.) Speg. Bolivia to Argentina Aylostera pulvinosa (F.Ritter & Buining) Backeb. Bolivia (Tarija) Aylostera pygmaea (R.E.Fr.) Mosti & Papini Bolivia to Argentina Aylostera spinosissima (Backeb.) Backeb. Bolivia. Aylostera steinmannii (Solms) Backeb. Bolivia to Argentina Aylostera tarvitaensis (F.Ritter) Mosti & Papini Bolivia. Aylostera tuberosa (F.Ritter) Backeb. Bolivia.

## Distribution and habitat

*Aylostera* species are native to [Bolivia](/source/Bolivia) and north-western [Argentina](/source/Argentina).[1] They are found on the [cordilleras](/source/Cordillera) to the east of the [Andes](/source/Andes), from [17° south](/source/17th_parallel_south) to [26° south](/source/26th_parallel_south), in montane dry forests, shrublands and [dry puna grasslands](/source/Puna_grassland#Dry_puna_(Central_Andean_dry_puna)).[2]

## References

1. ^ [***a***](#cite_ref-Powo_1-0) [***b***](#cite_ref-Powo_1-1) [***c***](#cite_ref-Powo_1-2) [***d***](#cite_ref-Powo_1-3) [***e***](#cite_ref-Powo_1-4) [***f***](#cite_ref-Powo_1-5) ["*Aylostera*"](https://powo.science.kew.org/taxon/295167-2). *[Plants of the World Online](/source/Plants_of_the_World_Online)*. [Royal Botanic Gardens, Kew](/source/Royal_Botanic_Gardens%2C_Kew). Retrieved 15 December 2024.

1. ^ [***a***](#cite_ref-Ritz16_2-0) [***b***](#cite_ref-Ritz16_2-1) [***c***](#cite_ref-Ritz16_2-2) [***d***](#cite_ref-Ritz16_2-3) Ritz, C.M.; Fickenscher, K.; Föller, J.; Herrmann, K.; Mecklenburg, R.; Wahl, R. (2016). "Molecular phylogenetic relationships of the Andean genus *Aylostera* Speg. (Cactaceae, Trichocereeae), a new classification and a morphological identification key". *Plant Systematics and Evolution*. **302** (7): 763–780. [Bibcode](/source/Bibcode_(identifier)):[2016PSyEv.302..763R](https://ui.adsabs.harvard.edu/abs/2016PSyEv.302..763R). [doi](/source/Doi_(identifier)):[10.1007/s00606-016-1296-4](https://doi.org/10.1007%2Fs00606-016-1296-4). [S2CID](/source/S2CID_(identifier)) [16873446](https://api.semanticscholar.org/CorpusID:16873446).

1. **[^](#cite_ref-MostBandPapi11_3-0)** Mosti, Stefano; Bandara, Nadeesha Lewke & Papini, Alessio (2011), ["Further insights and new combinations in *Aylostera* (Cactaceae) based on molecular and morphological data"](http://www.pakbs.org/pjbot/abstracts/43(6)/21.html), *Pakistan Journal of Botany*, **43** (6): 2769–2785, retrieved 2013-03-19

1. **[^](#cite_ref-RomeTaylZappTelh23_4-0)** Romeiro-Brito, Monique; Taylor, Nigel P.; Zappi, Daniela C.; Telhe, Milena C.; Franco, Fernando F. & Moraes, Evandro M. (2023). ["Unravelling phylogenetic relationships of the tribe Cereeae using target enrichment sequencing"](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10808018). *Annals of Botany*. **132** (5): 989–1006. [doi](/source/Doi_(identifier)):[10.1093/aob/mcad153](https://doi.org/10.1093%2Faob%2Fmcad153). [PMC](/source/PMC_(identifier)) [10808018](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10808018).

Taxon identifiers Aylostera Wikidata: Q15007878 Wikispecies: Aylostera CoL: 62FH5 GBIF: 7281998 GRIN: 24074 IPNI: 295167-2 IRMNG: 1318248 NCBI: 1873325 Open Tree of Life: 5502396 POWO: urn:lsid:ipni.org:names:295167-2 Tropicos: 40023503 WFO: wfo-4000003804

Authority control databases: National Israel

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