Pupulin, F. 1998. New Species of Trichocentrum (Orchidaceae) from the Andes with a Realignment of the Trichocentrum pulchrum Group. Novon 8: 283-287.

Abstract. Two new species of Trichocentrum, T. obcordilabium Pupulin and T. viridulum Pupulin, are described from the northwestern South American Andes. Trichocentrum brandtiae Kraenzlin and T. verruciferum Schlechter are reduced to synonymy of T. longicalcaratum Rolfe, and a new key to the Trichocentrum pulchrum group is provided.

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