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Evernia

noun
Ever·​nia | \ə̇ˈvərnēə, ēˈ-\

Definition of Evernia 

: a genus of lichens (family Usneaceae) having a fruticose or pendulous thallus with a cottony medulla

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History and Etymology for Evernia

New Latin, irregular from Greek euernēs sprouting well (from eu- + ernos sprout) + New Latin -ia

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