Orchid, Floral ontogeny, Congenital fusion, Synorganization, Orchidaceae, Labellum, Partial homology, Gynostemium, B-class genes, KNOX-gene expression, and Herminium

Ceratophyllales, Ceratophyllum, Congenital fusion, Fossils, Chloranthales, Mesangiosperms, Apocarpy, Syncarpy, and Pseudomonomery