Ruschieae is the largest tribe in the highly speciose subfamily Ruschioideae (Aizoaceae). A generic-level phylogeny for the tribe was recently produced, providing new insights into relationships between the taxa. Octopoma and Arenifera are woody shrubs with multilocular capsules and are distributed across the Succulent Karoo. Octopoma was shown to be polyphyletic in the tribal phylogeny, but co...

We describe and delimit with integrative taxonomy the new springtail species Desoria calderonis sp. nov. (Collembola: Isotomidae). This cryophilic is strictly linked to supraglacial stony debris of isolated Calderone glacier (Central Apennines, Italy), one southernmost glaciers Europe. could belong nivalis-complex, a group European mountain included in violacea-group. Genetic analysis (COI mtDN...

The genera Ustilago, Sporisorium and Macalpinomyces are a polyphyletic complex of plant pathogenic fungi. The four main morphological characters used to define these genera have been considered homoplasious and not useful for resolving the complex. This study re-evaluates character homology and discusses the use of these characters for defining monophyletic groups recovered from a reconstructed...

Nucleotide sequences for the complete mitochondrial control region (1158 bp) were used to determine the phylogenetic relationships among populations of the yellow mud turtle, Kinosternon flavescens (Kinosternidae). Phylogenetic analysis of the mtDNA sequences reveals a polyphyletic K. flavescens with three distinct clades: (1) K. flavescens of the Central Plains, including isolated populations ...

Polyploidy has played a major role in the evolution of many eukaryotes. Recent studies have dramatically reshaped views of polyploid evolution, demonstrating that most polyploid species examined, both plant and animal, have formed recurrently from different populations of their progenitors. Populations of independent origin can subsequently come into contact and hybridize, generating new genoty...