Resupination
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Resupination is derived from the Latin word resupinus, meaning "bent back with the face upward" or "on the back". "Resupination" is the noun form of the adjective "resupine" which means "being upside-
Resupinate flower of Diuris aequalis
Non-resupinate flowers of Prasophyllum elatum
Resupinate flowers of Cattleya aclandiae
Non-resupinate flowers of Calopogon tuberosus
Column (botany)
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The column, or technically the gynostemium, is a reproductive structure that can be found in several plant families: Aristolochiaceae, Orchidaceae, and Stylidiaceae.
Flower of Stylidium turbinatum, showing the column.