The tribe Amorpheae is an early-branching clade within the flowering plant subfamily Faboideae or Papilionaceae. It is found from Mexico to Argentina. It was recently found to belong in a larger clade known informally as the dalbergioids sensu lato. This tribe is consistently resolved as monophyletic in molecular phylogenetic analyses. It is estimated to have arisen 36.9 ± 3.0 million years ago (in the Eocene). A node-based definition for Amorpheae is: "the MRCA of Psorothamnus arborescens and Eysenhardtia orthocarpa." The tribe exhibits the following morphological synapomorphies: "epidermal glands throughout the plant body; dry, indehiscent fruits that are single-seeded; and terminal inflorescences."
Subclades and genera Amorphoids The amorphoids can be distinguished from the daleoids on the basis of their non-papilionaceous flowers. Amorpha L. Apoplanesia C. Presl
Errazurizia Phil. Eysenhardtia Kunth Parryella Torr. & A. Gray
Daleoids The daleoids can be distinguished from the amorphoids on the basis of their generally papilionaceous corollas. Dalea L. Marina Liebm. Psorothamnus Rydb.
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