Prosthechea Green Hornet

Prosthechea cochleata, formerly known as Encyclia cochleata, Anacheilium cochleatum, and Epidendrum cochleatum and commonly referred to as the Cockleshell Orchid or Clamshell Orchid, is an epiphytic, sympodial New World orchid native to Central America, the West Indies, Colombia, Venezuela, and southern Florida (wikipedia).