Subfamily: Caesalpinioideae.
Phylogenetic Number: 1.4.13.
Tribe: Detarieae.
Group: Hymenostegia.
Species Studied - Species in Genus: 1 studied; 1 in genus.
Fruit: A legume; unilocular; 20–25 cm long; 7–8 cm wide; 0.5–0.8 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; straight; not plicate; not twisted; symmetrical, or asymmetrical; dolabriform; with 1 straight and 1 curved suture; widest near apex; not inflated; flattened; without beak; long tapered at apex (rather abruptly along dorsal margin); aligned with longitudinal axis of fruit; rounded at base; aligned 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 ventral margin with poorly defined flangelike wing or flange(s); wing(s) absent; stipitate; with the stipe 6–10 mm long; with all layers dehiscing; splitting along suture(s). Replum invisible. Epicarp dull; monochrome; tan; with surface texture uniform; glabrous; eglandular; without spines; not smooth; with elevated features; veined; transversely veined relative to fruit length and reticulately veined; not tuberculate; not exfoliating; without cracks. Seed(s) 2–4.