(Pilosocereus purpusii)
A species of flowering plant is Pilosocereus purpusii. It was first described by Nathaniel Lord Britton and Joseph Nelson Rose, and given the exact name of Byles and Gordon Douglas Rowley.Pilosocereus purpusii belongs to the genus Pilosocereus, and family Cactaceae.There is no listed species like this. Pilosocereus (from Latin, "hairy cereus") is a genus of cactus native to the Neotropics. Tree cactus is a common name for Pilosocereus species. The commonly cultivated Pilosocereus pachycladus (syn. Pilosocerus azureus) is a blue cactus with hairy areoles that emit golden spines.