epigonium

noun
ep·​i·​go·​ni·​um | \ ˌepəˈgōnēəm\
plural -s

Definition of epigonium

: calyptra especially : the cover enclosing the young sporangium of a liverwort

History and Etymology for epigonium

New Latin, from epi- + Greek gonē seed + New Latin -ium

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