Labellar micromorphology of Dichaea. Labellum and detail of conical labellar papillae of (A, B) D. glauca (accession no. K8270), (C, D) D. brachypoda (accession no. K8268) and (E, F) D. hystricina (accession no. K43905). Scale bars = 1 mm, 50 µm, 1 mm, 90 µm, 1 mm and 80 µm, respectively.