Bignoniaceae Crescentia portoricensis is a vine-like shrub or small tree which may reach 6 to 8 m in height and 6 cm in diameter. The bark is gray and the branches are long, slender and glabrous throughout. Both surfaces are distinctly reticulate. Leaf bases are tapered and the apex usually rounded or blunt.
Flowers are solitary in leaf axils or along the branches.
The calyx is about 1.5 cm long, leathery, tubular, and two-lobed. Date 13 MAR 96 River in 1913 and was described as a new species utilizing that collection. The species has been reported only from forests on serpentine. The species has this status wherever found including the State of Puerto Rico. This species has no commercial value.