Etymology -From the Greek dendron which means tree - hence Tree Cereus.The genus Dendrocereus consists of two treelike species from the Caribbean. (Some taxonomists consider the two species to be the same.) While their size makes these plants stand out in habitat, taxonomically, this genus is rather obscure. The stems are ribbed with 3-5 ribs and have a wavy margin with areoles set in deep notches along the rib edges. Spines, when present, are not conspicuous. Stem color is a light green. Flowers are funnel shaped, nocturnal, and white. The floral tubes are smooth with a few small areoles. The fruits are smooth, round or pear-shaped, and green without spines.
Plants of this genus are almost nonexistent in cultivation.