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Ophioglossum

noun
Ophio·​glos·​sum

Definition of Ophioglossum 

: the type genus of the family Ophioglossaceae comprising the adder's-tongues and having a solitary simple frond with netted venation and a terminal spike formed of two rows of coalescent sporangia

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History and Etymology for Ophioglossum

New Latin, from ophi- + -glossum, from Greek glōssa tongue (explanation)

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