Claim: Catasetum maculatum is a dimorphic Angiosperm from the Orchidaceae family wherein both plant sexes have characteristics that differentiate them from each other.
Evidence: The flowers are dimorphic, and the male and female flowers look so different that they were originally thought to be two separate species. Angiosperms Family: Orchidaceae Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics beyond the differences in their sexual organs.