Aylostera
Template:Short description Template:Automatic taxobox
Aylostera, is a genus of cactus, native to central Bolivia and north western Argentina.[1] Aylostera was formerly sunk into a broadly circumscribed genus Rebutia, but molecular phylogenetic studies from 2007 onwards showed that when defined in this way, Rebutia was not monophyletic, leading to the resurrection of Aylostera. A 2023 classification of the tribe Cereeae placed it as the only genus in the subtribe Aylosterinae. It was formerly placed in the subtribe 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 and receptacles (which together form a structure that is often referred to as the 'flower tube') are hairy, rather than glabrous.[2]
Taxonomy
The genus Aylostera was erected by 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, since December 2024[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"..[1]
In a 2023 classification of the tribe Cereeae, it was placed as the only genus in the subtribe Uebelmanniinae, having formerly been placed in the subtribe 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.[2] since December 2024[update]Template:Dated maintenance category (articles)Script error: No such module "Check for unknown parameters"., Plants of the World Online accepted 26 species:[1]
| Image | Scientific name | Distribution |
|---|---|---|
| File:Rebutia albiflora1MW.jpg | Aylostera albiflora (F.Ritter & Buining) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia. |
| File:Rebutia albopectinata1b.MW.jpg | Aylostera albopectinata (Rausch) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia. |
| File:Rebutia atrovirens ritteri.jpg | Aylostera atrovirens (Backeb.) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Aylostera pseudodeminuta crop.jpg | Aylostera deminuta (F.A.C.Weber) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia einsteinii 1.jpg | Aylostera einsteinii (Frič) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia fiebrigii 1.jpg | Aylostera fiebrigii (Gürke) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia flavistylus 1.jpg | Aylostera flavistyla (F.Ritter) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia |
| Aylostera fusca (F.Ritter) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia. | |
| File:Rebutia heliosa pm.JPG | Aylostera heliosa (Rausch) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia. |
| Aylostera hoffmannii (Diers & Rausch) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia to Argentina (Salta) | |
| File:Rebutia kupperiana 2.jpg | Aylostera kupperiana (Boed.) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia (Tarija) |
| Aylostera leucanthema (Rausch) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia (Chuquisaca) | |
| Aylostera malochii (Slaba & Lad.Fisch.) RitzScript error: No such module "Check for unknown parameters". | Bolivia. | |
| Aylostera mamillosa (Rausch) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia | |
| Aylostera mandingaensis R.Wahl & JuckerScript error: No such module "Check for unknown parameters". | Bolivia. | |
| File:Rebutia muscula.JPG | Aylostera muscula (F.Ritter & P.Thiele) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia (Tarija) |
| File:Rebutia narvaecensis pm 1.jpg | Aylostera narvaecense CárdenasScript error: No such module "Check for unknown parameters". | Bolivia (Tarija) |
| File:Rebutia nigricans.jpg | Aylostera nigricans (Wessner) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Argentina |
| File:Rebutia perplexa (8416437001).jpg | Aylostera perplexa (Donald) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia. |
| File:Rebutia spegazziniana 1.jpg | Aylostera pseudominuscula (Speg.) Speg.Script error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia pulvinosa 1.jpg | Aylostera pulvinosa (F.Ritter & Buining) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia (Tarija) |
| File:Rebutia pygmaea1d.MW.jpg | Aylostera pygmaea (R.E.Fr.) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia spinosissima 1.jpg | Aylostera spinosissima (Backeb.) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia. |
| File:Rebutia steinmannii eucaliptana.jpg | Aylostera steinmannii (Solms) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia to Argentina |
| File:Rebutia tarvitaensis 1.jpg | Aylostera tarvitaensis (F.Ritter) Mosti & PapiniScript error: No such module "Check for unknown parameters". | Bolivia. |
| Aylostera tuberosa (F.Ritter) Backeb.Script error: No such module "Check for unknown parameters". | Bolivia. |
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Distribution and habitat
Aylostera species are native to Bolivia and north-western Argentina.[1] They are found on the cordilleras to the east of the Andes, from 17° south to 26° south, in montane dry forests, shrublands and dry puna grasslands.[2]
References
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