This clade does not currently have a node-based, phylogenetic definition. It also lacks a clear morphological synapomorphy, however, members of the Amburaneae, as well as species found in its sister group, Dipterygeae, are known to produce a variety of resins (balsams, coumarins, etc.).[3][5]
^Doyle JJ, Doyle JL, Ballenger JA, Dickson EE, Kajita T, Ohashi H (1997). "A phylogeny of the chloroplast gene rbcL in the Leguminosae: taxonomic correlations and insights into the evolution of nodulation". Am J Bot. 84 (4): 541–554. doi:10.2307/2446030. JSTOR2446030. PMID21708606. (subscription required)
^ abCardoso D, de Queiroz LP, Pennington RT, de Lima HC, Fonty É, Wojciechowski MF, Lavin M (2012). "Revisiting the phylogeny of papilionoid legumes: new insights from comprehensively sampled early-branching lineages". Am J Bot. 99 (12): 1991–2013. doi:10.3732/ajb.1200380. PMID23221500. (subscription required)