Contributed by Milo Pyne and Alan S. Weakley
A genus of 1400-1700 species, trees, shrubs, vines, and herbs, of tropical and temperate regions of the Old and New World.
Ref: Barboza et al. In Kadereit & Bittrich (2016); Bohs & Olmstead (1997); Harper & Diamond (2021); Knapp et al. (2019); Olmstead & Palmer (1997); Schilling (1981); Wahlert, Chiarini, & Bohs (2015). Show full citations.