Pteridium

noun
Pte·​rid·​i·​um | \ təˈridēəm, teˈr-\

Definition of Pteridium

: a genus of ferns that are related to and sometimes included in Pteris and that have in addition to the false indusium formed by the frond margin a true indusium on the inner side of the sori — see bracken

History and Etymology for Pteridium

New Latin, from Pterid-, Pteris + -ium

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