It is a shrub growing to 3.5 m tall. The leaves are 2.5–9 cm long, pinnate, with six to eight leaflets; the leaflets are 1.6–4.5 cm long and 1.1–2.3 cm broad. The flowers are produced a few together on short racemes, the individual flowers yellow, 12-16 mm long.2
Synonyms
Senna bicapsularis has been described under a wide variety of names that are today considered its synonyms. Some of these were also applied to related plants in error. This phenomenon has happened with other taxa, which were mis-applied to this plant:3
Adipera bicapsularis (L.) Britton & Wilson
Adipera spiciflora Pittier
Cassia berterii Colla
Cassia bicapsularis L.
Cassia bicapsularissensu Bojer is erroneous for Senna pendula.
Cassia bicapsularis of other authors is erroneous for Senna pendula var. glabrata