In botany, describing ferns and related plants where the sporangium develops from multiple cells, rather than from a single cell.
Greek eu- (well) + sporangium (spore container) + -ate (adjective suffix), literally 'having true sporangia.'
Eusporangiate ferns are the 'primitive' group—leptosporangiate ferns, which came later, are more efficient, showing how evolution refined the spore-making machinery.
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