Parmelia
noun
Par·me·lia
pärˈmēlēə,
-lyə
: a large genus (the type of the family Parmeliaceae) of chiefly alpine foliaceous lichens having cortex on both surfaces of a closely appressed thallus and including several that are important sources of purple and brown dyestuffs especially in Scotland, Wales, and Scandinavia see crottle
Word History
Etymology
New Latin, probably irregular from Latin parma small shield