Hybridization and polyploidization are important processes for plant evolution. However,
classification of hybrid or polyploid species has been notoriously difficult because of the …

The Salicaceae includes approximately 54 genera and over 1,400 species with a
cosmopolitan distribution. Members of the family are well-known for their diverse secondary …

Abstract Background and Aims The largest genus of Salicaceae sensu lato, Salix, has been
shown to consist of two main clades: clade Salix, in which species have XY sex …

Despite the economic, ecological, and scientific importance of the genera Salix L.(willows)
and Populus L.(poplars, cottonwoods, and aspens) Salicaceae, we know little about the …

Polyploids recurrently emerge in angiosperms, but most polyploids are likely to go extinct
before establishment due to minority cytotype exclusion, which may be specifically a …

Premise Herbaria harbor a tremendous number of plant specimens that are rarely used for
molecular systematic studies, largely due to the difficulty in extracting sufficient amounts of …

Polyploidization presents an unusual challenge for species with sex chromosomes, as it can
lead to complex combinations of sex chromosomes that disrupt reproductive development …

Ecotypes are distinct populations within a species that are adapted to specific environmental
conditions. Understanding how these ecotypes become established, and how they interact …

Premise The huge diversity of Salix subgenus Chamaetia/Vetrix clade in North America and
the lack of phylogenetic resolution within this clade has presented a difficult but fascinating …

Due to maternal inheritance and minimal rearrangement, the chloroplast genome is an
important genetic resource for evolutionary studies. However, the evolutionary dynamics …