Resembling or related to the lichen genus Evernia; lichen-like or belonging to the Everniaceae family.
From Evernia (the lichen genus) plus the suffix -oid (meaning 'resembling'). This technical botanical/mycological term emerged in scientific literature for classifying lichens.
The -oid suffix is a secret weapon in scientific naming—it lets scientists say 'sort of like this thing' without committing to a full classification, making 'evernioid' a perfectly vague word when you're not quite sure what lichen you're looking at.
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