New species of Siparuna (Siparunaceae) III. Three new species and one newly ranked entity from Colombia, Ecuador, and Peru

Three new species of Siparuna (Siparunaceae) are described, illustrated, an d placed in a phylogenetic context: S. gentryana from west ern Ecuador and adjacent Colombia, S. lozaniana from the western Andes in Colombia, and S. vasqueziana from Amazonian Peru. In addition, Siparuna calantha from the Si erra Nevada de Santa Marta, originally described by Janet Perkins as a vari ety of a Mexican entity, is raised to species rank because its broader leav es and more numerous carpels readily distinguish it from its apparent close st relative, a species from the western Colombian Andes. Each of the specie s is known from several collections, which allowed the secure matching of s exual morphs in the three that are dioecious.