Subfamily: Caesalpinioideae.
Phylogenetic Number: 1.4.52.
Tribe: Detarieae.
Group: Brownea.
Species Studied - Species in Genus: 1 studied; 1 in genus.
Fruit: A legume; unilocular; 21 cm long; 3 cm wide; 0.8 cm thick; 2–9 times longer than wide; with deciduous androecial sheath; with deciduous corolla; with deciduous calyx; without orifice formed by curving of fruit or fruit segments; curved; not plicate; not twisted; asymmetrical; linear; with both sutures parallelly curved; not inflated; flattened; without beak; tapered at apex; aligned with longitudinal axis of fruit; tapered at base; oblique with longitudinal axis of fruit; with the apex and base uniform in texture; ligneous; seed chambers externally invisible; margin not constricted; margin without sulcus; margin embellished; margin with thickened sutural areas (along ventral margin); wing(s) absent; stipitate; with the stipe 6–20 mm long. Replum invisible. Epicarp dull; monochrome; reddish brown; with surface texture uniform; densely velvety pubescent and indurate; with hairs erect; with 1 type of pubescence; velutinous (assumed); with simple hairs; eglandular; without spines; not smooth; with elevated features; veined; transversely veined relative to fruit length; not tuberculate; not exfoliating; without cracks.
Tribe Detarieae
Bruneau et al. (2000) carried out extensive phylogenetic analyses of tribes Amherstieae and Detarieae. They concluded that they form a single monophyletic group. Therefore, they supported Polhill's (1995a, 1995b) decision to unite the two tribes.