Evernic acid, lichens

Evernic acid and other lichen acids if available (1% in petrolatum 0.1% in acetone)... 

Extract of oak moss. Extract made mainly from Evernia prunastri (oak moss) and Pseudevernia furfuracea (tree moss). Oak moss concrete is prepared by hydrocarbon solvent extraction of the lichen Evernia PrunastrU collected mainly from oak trees in Yugoslavia, France, Italy, Corsica, Morocco, Hungary, and various central European countries. Contains atranorin, evernic acid and usnic acid Synonyms oak moss-resinoid oil Mousse concrete oak moss oak moss extra resinoid colourless MD oak moss LA oakmoss oil oak moss resin oak moss resinoid diethyl phthalate codistillate Evernia furfuraceae spp. absolute tree moss absolute Mousse d arbre absolute Evernia spp. absolute Mousse de chene absolute Evernia furfuraceae spp. concrete Mousse d arbre concrete tree moss concrete Evernia prunasti spp. concrete Evernia prunasti spp. oil Evernia prunasti spp. resin Uses fragrance in many perfume mixtures, after-shave lotions etc. (hay new-mown hay animal fern green). PA... 

Lichen acid mix (atranorin, evernic acid, usnic acid) 0.3% pet. ... 

Robertson A, Stephenson RJ (1932) Lichen acids. Part II. The constitution of evernic acid and the synthesis of methyl evernate. J Chem Soc 1388-1395... 

Whiton and Lawrey found that ascospore germination of the lichens Cladonia cristatella 724), Graphis scripta and Caloplaca citrina 725) was much reduced in the presence of lichen substances. Spore germination of Cladonia cristatella and Caloplaca citrina was inhibited by vulpinic acid, evernic acid and atranorin respectively stictic acid showed no activity. 

Allergenic Activity. Numerous lichen substances like atranorin, barbatic, diffractaic, evernic, fumarprotocetraric, lobaric, per-latolic, physodic, physodalic, protolichesterinic, salazinic, stictic and usnic acids are allergenes (Brasch and Jacobsen 1991). 

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