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Related to Megasporophyll: microsporophyll, megasporangium
a leaf on which or in the axil of which only megasporangia (or a megasporangium) form. Megasporophylls are characteristic of heterosporous Lycopodiales (Lepidodendron, Selaginella) and sago palms. In angiosperms the carpel is homologous to the megasporophyll.