royal fern

variants: or less commonly royal osmund

Definition of royal fern

: a common and widely distributed fern (Osmunda regalis) with large bipinnate fronds bearing the panicled globose sporangia at their summit

called also ditch fern, French bracken, king fern

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First Known Use of royal fern

1781, in the meaning defined above

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The first known use of royal fern was in 1781

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