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Acrostichum

noun
Acros·​ti·​chum | \ ə-ˈkrȯ-sti-kəm, -ˈkrä-\

Definition of Acrostichum 

: a genus of tropical ferns (family Polypodiaceae) with varied habit but with the sporangia covering all the underside of the frond

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First Known Use of Acrostichum

1879, in the meaning defined above

History and Etymology for Acrostichum

New Latin, irregular from Greek akrostichis; from the arrangement of the spores on the leaflets

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The first known use of Acrostichum was in 1879

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