Aylostera pseudodeminuta var. schneiderianaBackeb.
Aylostera pseudodeminuta var. schumannianaBackeb.
Aylostera simoniana(Rausch) Mosti & Papini
Aylostera spegazziniana var. atroviridisBackeb.
Aylostera waltheriana(Backeb.) Y.Itô, not validly publ.
Echinopsis deminutaF.A.C.Weber
Rebutia deminuta(F.A.C.Weber) Britton & Rose
Rebutia dutineana var. graciliorRausch
Rebutia frohlichianaRausch
Rebutia kupperiana var. spinifloraF.Ritter
Rebutia mamillosa var. australisF.Ritter
Rebutia mamillosa var. orientalisF.Ritter
Rebutia pseudodeminutaBackeb.
Rebutia robustispina var. minorF.Ritter
Rebutia sanguinea var. minorF.Ritter
Rebutia simonianaRausch
Rebutia spegazziniana var. atroviridis(Backeb.) Šída
Sulcorebutia azurduyensis var. sormae(Heřtus, Horáček & Slaba) Gertel & Jucker
Sulcorebutia lada-horacekiiSlaba
Sulcorebutia sormaeHeřtus, Horáček & Slaba
Aylostera deminuta, synonymRebutia deminuta, is a species of flowering plant in the family Cactaceae, native to Bolivia and northwest Argentina.[1] The exact delimitation of the species varies, but sources agree that it is a short cactus with ribbed stems and orange to red flowers.
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.[2] 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 2.5cm across, and having deep orange-red flowers about 3cm long and wide.[3] Other forms are described as solitary, with larger stems (up to about 10cm high) and somewhat larger flowers, which are orange or carmine red.[4][5]
Taxonomy
Aylostera deminuta was first described by Frédéric Weber in 1904 as Echinopsis deminuta.[6] In 1923, Britton and Rose transferred it to the genus Rebutia as Rebutia deminuta, and in 1936, Curt Backeberg transferred it to Aylostera.[1]Aylostera was generally sunk into Rebutia until phylogenetic studies from 2011 onwards led to Rebutia being split up, and the placement of the species in Aylostera was restored.[7][2] A 2016 molecular phylogenetic study of the genus proposed a very broad circumscription of the species, reducing many species that are accepted by Plants of the World Onlineas of December2024[update] to synonyms of Aylostera deminuta, including:[2]
A.deminuta is native to Bolivia and north-western Argentina.[1] It occurs with related Aylostera species on the eastern side of the Andes, in montane dry forests, shrublands and dry puna grasslands.[2]
1234Ritz, 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:2016PSyEv.302..763R, doi:10.1007/s00606-016-1296-4, S2CID16873446
↑Anderson, Edward F. (2001), "Rebutia deminuta", The Cactus Family, Pentland, Oregon: Timber Press, p.602, ISBN978-0-88192-498-5
↑Anderson, Edward F. (2001), "Rebutia pseudodeminuta", The Cactus Family, Pentland, Oregon: Timber Press, p.607, ISBN978-0-88192-498-5
↑Anderson, Edward F. (2001), "Rebutia simoniana", The Cactus Family, Pentland, Oregon: Timber Press, p.608, ISBN978-0-88192-498-5
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