The

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confl ...

Swartzieae is an early-branching

monophyletic In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic ...

clade of the

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

subfamily

Faboideae The Faboideae are a subfamily of the flowering plant family Fabaceae or Leguminosae. An acceptable alternative name for the subfamily is Papilionoideae, or Papilionaceae when this group of plants is treated as a family. This subfamily is widely ...

or Papilionaceae. Traditionally this tribe has been used as a

wastebasket taxon Wastebasket taxon (also called a wastebin taxon, dustbin taxon or catch-all taxon) is a term used by some taxonomists to refer to a taxon that has the sole purpose of classifying organisms that do not fit anywhere else. They are typically define ...

to accommodate genera of

which exhibit actinomorphic, rather than

zygomorphic Floral symmetry describes whether, and how, a flower, in particular its perianth, can be divided into two or more identical or mirror-image parts. Uncommonly, flowers may have no axis of symmetry at all, typically because their parts are spiral ...

floral symmetry and/or incompletely differentiated petals and free stamens. It was recently revised and most of its genera were redistributed to other tribes ( Amburaneae, Baphieae, and Exostyleae). Under its new circumscription, this clade is consistently resolved in molecular phylogenies. Members of this tribe possess "non-papilionate swartzioid flowers ��argely characterized by a tendency to lack petals combined with a profusion and elaboration of free stamens" and a "lack of unidirectional order in the initiation of the stamens". They also have "complete or near complete fusion of sepals resulting from intercalary growth early in development, relatively numerous stamens, and a single or no petal, with other petals not at all apparent in development." The tribe is predicted to have diverged from the other legume lineages 48.9±2.8 million years ago (in the

Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ...

Subclades and genera

Swartzioids ''sensu stricto'' Ireland ''et al''. 2000

The members of this clade occur mainly in lowland rain forests. * '' Bobgunnia'' J. H. Kirkbr. & Wiersema * '' Bocoa'' Aubl. * '' Candolleodendron'' R. S. Cowan * ''

Fairchildia ''Fairchildia panamensis'' is a species of flowering plants in the family Fabaceae. It belongs to the subfamily Faboideae The Faboideae are a subfamily of the flowering plant family Fabaceae or Leguminosae. An acceptable alternative name fo ...

'' Britton & Rose * '' Swartzia'' Schreb.

Atelioids Ireland ''et al''. 2000

The members of this clade are distinguished by "a nearly actinomorphic androecium with basifixed anthers, exarillate seeds, and a tendency toward alternate leaflets." They occur mainly in neotropical, seasonally-dry tropical woodlands. * '' Ateleia'' (DC.) Benth. * ''

Cyathostegia ''Cyathostegia'' is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. It is often considered to be a monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains onl ...

'' (Benth.) Schery * '' Trischidium'' Tul.

References

{{Taxonbar, from=Q7653958 Faboideae Fabaceae tribes