Flacourtiaceae Banara vanderbiltii is an evergreen shrub or small tree which may reach 10 meters in height and 12 cm in diameter.
Leaves are alternate, dentate, and densely pubescent on both surfaces.
Twigs and branches may also be somewhat pubescent. Flowers are solitary at the ends of branches. Calyx and corolla lobes three, tomentose. The species has this status wherever found including the Commonwealth of Puerto Rico. Regulation to Govern the Management of Threatened and Endangered Species in the Commonwealth of Puerto Rico, 1985.