Pupulin, F., C. Ossenbach, R. Jenny & E. Vitek. 2012. Additamenta ad Typos Endresianos Orchidacearum Costaricae. Ann. Naturhist. Mus. Wien 113B: 133-138.

Abstract. When the orchid material collected in Costa Rica by A.R. Endrés was typified by Pupulin et al. (2010), four taxa were overlooked. They are treated here. Masdevallia gracilenta and Polystachya cingulata are lectotypified.
Key words: Orchidaceae, typification, Auguste R. Endrés, Costa Rica, Reichenbach Herbarium, Naturhistorisches Museum Wien

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