Evernia is a bushy lichen in the family Parmeliaceae

Parmeliaceae

The Parmeliaceae is a large and diverse family of Lecanoromycetes. With over 2000 species in roughly 87 genera, it is currently regarded as the largest family of lichen forming fungi...

. Two species, Oakmoss Evernia prunastri, and Treemoss Evernia furfuracea are used as a fixative

Fixative

A fixative is a stabilizing or preservative agent:*Fixative , a liquid usually sprayed over a finished piece of artwork to better preserve it and prevent smudging...

 agent in cologne

Cologne

Cologne is Germany's fourth-largest city , and is the largest city both in the Germany Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants.Cologne is located on both sides of the...

 within the perfume

Perfume

Perfume is a mixture of fragrant essential oils and/or aroma compounds, fixatives, and solvents used to give the human body, animals, objects, and living spaces "a pleasant scent"...

 industry. It is green on top and white on bottom, and divides evenly into "forks." Not to be confused with Ramalina

Ramalina

Ramalina is a genus of lichens belonging to the suborder Lecanorineae. The genus has a widespread distribution and contains over 240 species....

, which is green on top and bottom and divides unevenly. Evernia is an abundant genus, found growing on trees.