Aylostera

Familia: Cactaceae
Subfamilia: Cactoideae
Tribus: Cereeae
Subtribus: Aylosterinae
Genus:
Subgenera: A. subg. Aylostera – A. subg. Mediolobivia
Species: A. albiflora – A. albopectinata – A. atrovirens – A. deminuta – A. einsteinii – A. fiebrigii – A. flavistyla – A. fusca – A. heliosa – A. hoffmannii – A. juckeri – A. kupperiana – A. leucanthema – A. malochii – A. mamillosa – A. mandingaensis – A. muscula – A. narvaecense – A. nigricans – A. perplexa – A. pseudominuscula – A. pulvinosa – A. pygmaea – A. spinosissima – A. steinmannii – A. tarvitaensis – A. tuberosa

Unresolved names: A. azurduyensis

Aylostera Speg. (1923)

• Aylostera deminuta (F.A.C.Weber) Backeb., Kaktus-ABC: 274. (1936) originally designated as Aylostera pseudominuscula (Speg.) Speg. in Anales Soc. Ci. Argent. 96: 75. (1923) syn. sec. Ritz & al. (2016)
  

Note: POWO prefers a wider circumscription compared to CACO. The green links are accepted by POWO, but are synonyms according to CACO. Until this resolved this taxon must remain disputed and circumscription sensu POWO (2025) is provided for reference.

• Heterotypic
  • Acantholobivia Y.Itô, Explan. Diagr. Austroechinocactinae 290 (1957), nom. illeg. non Backeb., Acantholobivia Backeb. in Cactaceae (Berlin) 1941(2): 76 (1942). vide Echinopsis Zucc. in Abh. Math.-Phys. Cl. Königl. Bayer. Akad. Wiss. 2: 675 (1837).
    • Acanthanthus Y.Itô, Cactaceae (Itô) 354 (1981), nom. nud.
      • Type species: L. neohaageana Backeb.
  • Cylindrorebutia Frič & Kreuz., Succulenta, 20: 55, 1938, nom. inval. pro parte Rebutia K.Schum. in Monatsschr. Kakteenk. 5: 102. (1895)
    • Type species: non design.
  • Digitorebutia Frič & Kreuz. ex Buining, Succulenta (Leeuwarden) 22: 51 (1940).
    • Type species: D. haagei (Frič & Schelle) Buining
  • Echinorebutia Frič ex Kreuz., Verzeichnis Amer. Sukk. Revision Syst. Kakteen 26 (1935) [1], nom. inval.
    • Type species: E. fiebrigii (Gürke) Kreuz., nom. inval.
  • Mediorebutia Frič, nom. inval.
    • Type species: non design.
  • Rebutia subg. Lobirebutia Frič, in index seminum (1932).
    • Lobirebutia Frič, nom. inval.
      • Type species: non design.
  • Setirebutia Frič ex Kreuz., Verzeichnis Amer. Sukk. Revision Syst. Kakteen 26 (1935) [2], nom. inval.
    • Setirebutia Frič ex Buining, Succulenta 20(4): 53 (1938), nom. inval.
      • Type species: S. aureiflora (Backeb.) Kreuz., nom. inval.
        

• Backeberg, C. 1936. Kaktus-ABC, en Haandbog for Fagfolk og Amatorer 274.
• Spegazzini, C.L. 1923. Anales de la Sociedad Cientifica Argentina 96: 75.

• Mosti, S., Bandara, N.L. & Papini, A. 2011. Further insights and new combinations in Aylostera (Cactaceae) based on molecular and morphological data. Pakistan Journal of Botany 43(6): 2769–2785 PDF. Reference page. 
• 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. DOI: 10.1007/s00606-016-1296-4 ResearchGate Reference page. 
• Korotkova, N., Aquino, D., Arias, S., Eggli, U., Franck, A. , Gómez-Hinostrosa, C., Guerrero, P.C., Hernández, H.M., Kohlbecker, A., Köhler, M., Luther, K., Majure, L.C., Müller, A., Metzing, D., Nyffeler, R., Sánchez, D., Schlumpberger, B. & Berendsohn, W.G. 2021. Cactaceae at Caryophyllales. org–a dynamic online species-level taxonomic backbone for the family. Willdenowia 51(2): 251–270. DOI: 10.3372/wi.51.51208 Reference page. 

• Govaerts, R. et al. 2025. Aylostera in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 June 3. Reference page.  with an expanded circumscription.
• Korotkova, N. et al. 2021. Aylostera in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published online. Accessed: 2021 Nov. 3. Reference page. 
• Hassler, M. 2021. Aylostera. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2021 Apr. 9. Reference page. 
• International Plant Names Index. 2025. Aylostera. Published online. Accessed: June 3 2025. Reference page.

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