Since the last classification of Orchidaceae in 2003, there has been major progress in the
determination of relationships, and we present here a revised classification including a list of …

It is widely recognized that we are entering an extinction event on a scale approaching the
mass extinctions seen in the fossil record. Present-day rates of extinction are estimated to be …

Sexual mimicry is a complex multimodal strategy used by some plants to lure insects to
flowers for pollination. 1–4 It is notable for being highly species-specific and is typically …

The subtribe Orchidinae, distributed predominantly in Eastern Asia and the Mediterranean,
presents some of the most intricate taxonomic problems in the family Orchidaceae with …

Research on global patterns of diversity has been dominated by studies seeking
explanations for the equator-to-poles decline in richness of most groups of organisms …

The build-up of biodiversity is the result of immigration and in situ speciation. We investigate
these two processes for four lineages (Disa, Irideae pp, the Pentaschistis clade and …

Habenaria is a large genus of terrestrial orchids distributed throughout the tropical and
subtropical regions of the world. The integrity and monophyly of this genus have been under …

Fire may have been a crucial component in the evolution of the Cape flora of South Africa, a
region characterized by outstanding levels of species richness and endemism. However …

Plant species have accumulated in the Cape region of southern Africa to a much greater
degree than in areas of equivalent size in the rest of the subcontinent. Although this could be …

The pantropical orchid genus Polystachya is the subject of ongoing taxonomic work. We
inferred phylogenetic relationships in the genus using 5.3 kb of plastid DNA, for 83 out of ca …