gonophore.

Diversity

In the order Leptomedusae, the gonophores are borne on much-reduced hydranths and are usually protected in a peridermal (i.e. belonging to a hydroid perisarc) gonotheca. Medusae forming on fully developed hydranths are extremely rare; usually the gonophores develop into medusae or into sessile sporosacs.

In the superfamily Plumularioidea, they usually occur

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