Bonellia is a genus of evergreen shrubs and small trees in the family Primulaceae (the primrose family), placed within the order Ericales. It comprises 29 accepted species distributed across the tropical Americas, from Mexico south through Central America and the Caribbean to Venezuela and Peru.
The genus belongs to the subfamily Theophrastoideae — a group formerly treated as the separate family Theophrastaceae — and sits within the tribe Theophrasteae alongside closely related genera such as Theophrasta, Clavija, and Jacquinia. Bonellia was established as a distinct genus when molecular phylogenetic analyses revealed that the traditional circumscription of Jacquinia was paraphyletic: two separate and distinct clades had been lumped together, and splitting off Bonellia was necessary to restore monophyly. This reorganisation brought the total to seven genera within Theophrasteae.
Species of Theophrasteae are generally evergreen shrubs or small trees with hypogynous flowers. They are adapted to lowland regions with seasonal, dry climates and are typically found in coastal thickets, dry shrub vegetation, and dry deciduous or semideciduous forests across the Neotropics.
Distribution
Bonellia is native to the tropical Americas, ranging from Mexico through Central America and the Caribbean south to Venezuela and Peru. Species of the tribe Theophrasteae to which Bonellia belongs are predominantly lowland and favour regions with a seasonal, dry climate, occurring in coastal thickets, dry shrub vegetation, and dry deciduous or semideciduous forests.
Taxonomy Notes
Bonellia was segregated from the genus Jacquinia after molecular phylogenetic analyses demonstrated that Jacquinia as traditionally defined was paraphyletic, comprising two distinct and separate clades. Splitting off Bonellia restored monophyly and brought the total genera in tribe Theophrasteae to seven. The genus is placed in the subfamily Theophrastoideae of Primulaceae (order Ericales), a group formerly recognised as the independent family Theophrastaceae before APG III (2009) merged all primuloid families into an expanded Primulaceae.
Ecology
Species of Bonellia are adapted to lowland, seasonally dry environments in the Neotropics. They grow in coastal thickets, dry shrub vegetation, and dry deciduous to semideciduous forests — habitats typical of the broader tribe Theophrasteae to which Bonellia belongs.
