Melocactus conoideus (Melon cactus) is a critically endangered cactus from eastern Brazil due to loss of habitat.
They are also seen in the Caribbean, northern South America, with some species along the Andes down to southern Peru.
Mature plants are easily recognizable by their cephalium, a wool- and bristle-coated structure at the apex of the plant,
from which the inconspicuous flowers grow.
This is an unusual and hard to find specimen cactus with a showy huge base.