Lichens are symbiotic associations resulting from interactions among fungi (primary and
secondary mycobionts), algae and/or cyanobacteria (primary and secondary photobionts) …

Classification is the most important approach to cataloging biological diversity. It serves as a
principal means of communication between scientific disciplines, as well as between …

Families and genera assigned to Tremellomycetes have been mainly circumscribed by
morphology and for the yeasts also by biochemical and physiological characteristics. This …

Speciation is driven by the evolution of reproductive isolating barriers that reduce, and
ultimately prevent, substantial gene flow between lineages. Despite its central role in …

Although classification at supra-specific ranks is inherently arbitrary, comparable taxonomic
ranks within clades can facilitate more consistent classifications and objective comparisons …

Approaches to macroevolution require integration of its two fundamental components, ie the
origin and the sorting of variation, in a hierarchical framework. Macroevolution occurs in …

Taxonomic ranks above the species level are inherently arbitrary. However, there is a
growing number of publications aimed at more consistent classifications with comparable …

Progress in the development and use of methods for species delimitation employing
phenotypic data lags behind conceptual and practical advances in molecular genetic …

Why are some traits and trait combinations exceptionally common across the tree of life,
whereas others are vanishingly rare? The distribution of trait diversity across a clade at any …

Hybridization between the European smooth and palmate newts has recurrently been
mentioned in the literature. The only two studies that attempted to quantify the frequency of …