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Aylostera deminuta

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(Redirected from Rebutia pseudodeminuta) Species of cactus

Aylostera deminuta
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Aylostera
Species: A. deminuta
Binomial name
Aylostera deminuta
(F.A.C.Weber) Backeb.
Synonyms
List
  • Aylostera pseudodeminuta (Backeb.) Backeb.
  • Aylostera pseudodeminuta var. albiseta Backeb.
  • Aylostera pseudodeminuta var. grandiflora Backeb.
  • Aylostera pseudodeminuta var. schneideriana Backeb.
  • Aylostera pseudodeminuta var. schumanniana Backeb.
  • Aylostera simoniana (Rausch) Mosti & Papini
  • Aylostera spegazziniana var. atroviridis Backeb.
  • Aylostera waltheriana (Backeb.) Y.Itô, not validly publ.
  • Echinopsis deminuta F.A.C.Weber
  • Rebutia deminuta (F.A.C.Weber) Britton & Rose
  • Rebutia dutineana var. gracilior Rausch
  • Rebutia frohlichiana Rausch
  • Rebutia kupperiana var. spiniflora F.Ritter
  • Rebutia mamillosa var. australis F.Ritter
  • Rebutia mamillosa var. orientalis F.Ritter
  • Rebutia pseudodeminuta Backeb.
  • Rebutia robustispina var. minor F.Ritter
  • Rebutia sanguinea var. minor F.Ritter
  • Rebutia simoniana Rausch
  • Rebutia spegazziniana var. atroviridis (Backeb.) Šída
  • Sulcorebutia azurduyensis var. sormae (Heřtus, Horáček & Slaba) Gertel & Jucker
  • Sulcorebutia lada-horacekii Slaba
  • Sulcorebutia sormae Heřtus, Horáček & Slaba

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. 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. 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 Online as of December 2024 to synonyms of Aylostera deminuta, including:

Distribution and habitat

A. deminuta is native to Bolivia and north-western Argentina. It occurs with related Aylostera species on the eastern side of the Andes, in montane dry forests, shrublands and dry puna grasslands.

References

  1. ^ "Aylostera deminuta (F.A.C.Weber) Backeb.", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2024-12-21
  2. ^ 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:2016PSyEv.302..763R, doi:10.1007/s00606-016-1296-4, S2CID 16873446
  3. Anderson, Edward F. (2001), "Rebutia deminuta", The Cactus Family, Pentland, Oregon: Timber Press, p. 602, ISBN 978-0-88192-498-5
  4. Anderson, Edward F. (2001), "Rebutia pseudodeminuta", The Cactus Family, Pentland, Oregon: Timber Press, p. 607, ISBN 978-0-88192-498-5
  5. Anderson, Edward F. (2001), "Rebutia simoniana", The Cactus Family, Pentland, Oregon: Timber Press, p. 608, ISBN 978-0-88192-498-5
  6. "Aylostera deminuta (F.A.C.Weber) Backeb.", The International Plant Names Index, retrieved 2024-12-21
  7. Mosti, Stefano; Bandara, Nadeesha Lewke & Papini, Alessio (2011), "Further insights and new combinations in Aylostera (Cactaceae) based on molecular and morphological data", Pakistan Journal of Botany, 43 (6): 2769–2785, retrieved 2013-03-19
Taxon identifiers
Aylostera deminuta
Rebutia deminuta
Echinopsis deminuta
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