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The New World tropical epiphytic orchid Prosthechea trulla is often confused with Prosthechea cochleata (syn. Encyclia lancifolia). There is confusion in the literature involving these two species -- some plants in the trade were erroneously identified as Encyclia lancifolia instead of Prosthechea trulla. They are similar in look, but P. trulla has a narrower lip (9-17 mm wide and 9-12 mm long) with a trowel shape, whereas the lip of P. cochleata is broader (13-26 mm wide and 10-21 mm long) and the sepals and petals of P. cochleata are longer (30-75 mm in length) than those of P. trulla.