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Whether the flowers are inverted or not. Flowers which are resupinate have the dorsal sepal above the lateral sepals and the labellum below the column. Inverted flowers (non-resupinate) have the dorsal sepal below the lateral sepals and the labellum above the column.
|  | Resupinate (labellum below column): an orchid flower which has the dorsal sepal above the lateral sepals and the labellum below the column. |  | Not resupinate (labellum above column): an orchid flower which has the dorsal sepal below the lateral sepals and the labellum above the column. |