Definition of Pertusaria
: a large widely distributed genus (the type of the family Pertusariaceae) of crustose lichens that have the fruiting bodies in structures resembling knobs and that are one of the sources of litmus and archil — compare roccella
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Origin and Etymology of pertusaria
New Latin, from Latin pertusus (past participle of pertundere to bore through) + New Latin -aria — more at pierce
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