Menadenium rostratum (Hook.) Raf., Fl. Tellur. 4: 45. 1836[1838].

Bas.: Zygopetalum rostratum Hook., Bot. Mag. 55: t. 2819. 1828.

TYPE: Venzuela: Demerara, introduced to the Liverpool Botanic garden by C. S. Parker, flowered in October, 1827, C.S. Parker s.n. (holotype, K; illustration of type).

HOMOTYPIC SYNONYMS

Eulophia rostrata (Hook.) Steud., Nomencl. Bot., ed. 2, 1: 605. 1840.

Zygosepalum rostratum (Hook.) Rchb.f., Ann. Bot. Syst. 6: 666. 1863.

ACCEPTED NAME

Zygosepalum labiosum (Rich.) Garay, Orquideología 1(3): 2. 1967.

Bas.: Epidendrum labiosum Rich., Actes Soc. Hist. Nat. Paris 1: 112. 1792.

TYPE: Guyana. Locality not indicated, L. C. Richard s.n. (holotype, P).