Tribe of legumes
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.
Daleoids.
The daleoids can be distinguished from the amorphoids on the basis of their generally papilionaceous corollas.
References.
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