The tribe Swartzieae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae.
Traditionally this tribe has been used as a wastebasket taxon to accommodate genera of Faboideae which exhibit actinomorphic, rather than zygomorphic floral symmetry and/or incompletely differentiated petals and free stamens.
[2][4][6][7][8][9][10][1][11] Members of this tribe possess "non-papilionate swartzioid flowers[…]largely characterized by a tendency to lack petals combined with a profusion and elaboration of free stamens"[2][4] and a "lack of unidirectional order in the initiation of the stamens".
"[12] The tribe is predicted to have diverged from the other legume lineages 48.9±2.8 million years ago (in the Eocene).
[4][6][1] The members of this clade are distinguished by "a nearly actinomorphic androecium with basifixed anthers, exarillate seeds, and a tendency toward alternate leaflets.