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Zürich, Switzerland

Traditional classifications of the suborder Portulacineae recognize six families: Basellaceae, Cactaceae, Didiereaceae, Halophytaceae, Hectorellaceae, and Portulacaceae. However, phylogenetic analyses based on molecular sequence data indicate that the traditional family Portulacaceae is paraphyletic and consists of three distinct lineages that also include Cactaceae, Didiereaceae, and Hectorellaceae. We use sequence data from the chloroplast genes matK and ndhF representing 64 species of Portulacineae and outgroups to reconstruct their phylogenetic relationships with Bayesian and maximum parsimony inference methods. Evidence from these molecular phylogenetic analyses as well as from comparative morphological investigations allow us to propose a revised familial classification of the suborder Portulacineae. We recognize eight monophyletic families: Anacampserotaceae (Anacampseros, Grahamia, Talinopsis), Basellaceae, Cactaceae, Didiereaceae (incl. Calyptrotheca, Ceraria, Portulacaria), Halophytaceae, Montiaceae (incl. Hectorellaceae, Calandrinia, Cistanthe, Claytonia, Lewisia, Montia, Phemeranthus), Portulacaceae (Portulaca only), and Talinaceae (Amphipetalum, Talinella, Talinum). We provide a synopsis for this revised family classification with an identification key mainly based on habit and fruit characters, and family diagnoses with information on distribution, taxonomic diversity, and a brief discussion on phylogenetics and classification. Source


Eggli U.,Sukkulenten Sammlung Zurich | Hofacker A.,Neuweiler Strasse 8 1
Novon | Year: 2010

The name Parodia leninghausii (F. Haage) F. H. Brandt (Cactaceae) is in common use for a widespread and easily grown plant, but no valid combination has ever been published. The missing combination P. lenninghausii (F. Haage) F. H. Brandt ex Eggli & Hofacker is published here, together with the designation of a lectotype and a note on the orthography of the name. © Missouri Botanical Garden 2010. Source


Eggli U.,Sukkulenten Sammlung Zurich | Giorgetta M.,Mario Giorgetta
Bradleya | Year: 2013

Solitary plants of the putative intergeneric cross Oreocereus celsianus × Echinopsis tarijensis were found on two independent occasions in the same general region of S Bolivia (Dept. Potosí). The plants are described and illustrated. They are intermediate in general appearance and flower characters between the supposed parents, and appear to be sterile. The importance of intergeneric and interspecific crosses in the evolution of Cactaceae is briefly discussed, and the relative ease with which intergeneric hybrids can be artificially obtained in cultivation is contrasted with the apparent rarity of naturally occurring intergeneric hybrids. Based on available evidence, the impact of natural intergeneric hybridization on cactus evolution appears to be limited. Source


Hernandez-Ledesma P.,Free University of Berlin | Hernandez-Ledesma P.,Autonomous University of Queretaro | Berendsohn W.G.,Free University of Berlin | Borsch T.,Free University of Berlin | And 19 more authors.
Willdenowia | Year: 2015

The Caryophyllales constitute a major lineage of flowering plants with approximately 12 500 species in 39 families. A taxonomic backbone at the genus level is provided that reflects the current state of knowledge and accepts 749 genera for the order. A detailed review of the literature of the past two decades shows that enormous progress has been made in understanding overall phylogenetic relationships in Caryophyllales. The process of re-circumscribing families in order to be monophyletic appears to be largely complete and has led to the recognition of eight new families (Anacampserotaceae, Kewaceae, Limeaceae, Lophiocarpaceae, Macarthuriaceae, Microteaceae, Montiaceae and Talinaceae), while the phylogenetic evaluation of generic concepts is still well underway. As a result of this, the number of genera has increased by more than ten percent in comparison to the last complete treatments in the “Families and genera of vascular plants” series. A checklist with all currently accepted genus names in Caryophyllales, as well as nomenclatural references, type names and synonymy is presented. Notes indicate how extensively the respective genera have been studied in a phylogenetic context. The most diverse families at the generic level are Cactaceae and Aizoaceae, but 28 families comprise only one to six genera. This synopsis represents a first step towards the aim of creating a global synthesis of the species diversity in the angiosperm order Caryophyllales integrating the work of numerous specialists around the world. © 2015 BGBM Berlin. Source


Karaer F.,Ondokuz Mayis University | Celep F.,Middle East Technical University | Eggli U.,Sukkulenten Sammlung Zurich
Nordic Journal of Botany | Year: 2011

A revision of four Sempervivum species (S. artvinense, S. brevipetalum, S. davisii and S. furseorum) based on field observation and examination of herbarium specimens (including the type specimens of all names) is presented. Examination of critical diagnostic characters showed that S. artvinense, S. brevipetalum and S. furseorum fall within the variability of S. davisii and should be subsumed as synonyms under this name. Sempervivum furseorum shows minor but consistent morphological and ecological differences as well as a disjunct distribution and is therefore treated as S. davisii ssp. furseorum. Moreover, an amended and expanded description of the species is presented, with notes on distribution, phenology and ecology. © 2011 The Authors. Source

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