Parmelia sulcata -... en.wikipedia.org

Parmelia (fungus) -... en.wikipedia.org

shield lichen (Parmelia... www.inaturalist.org

Parmelia | Lichen Biology,... www.britannica.com

Consortium of Lichen... lichenportal.org

Parmelia barrenoae -... en.wikipedia.org

Parmelia | Lichen Biology,... www.britannica.com

lichen-Parmelia sulcata –... ohiomosslichen.org

Ways of Enlichenment -... www.waysofenlichenment.net

Hammered Shield Lichen... petehillmansnaturephotograp...

Parmelia saxatilis -... en.wikipedia.org

A Lichen, Parmelia sulcata... www.usgs.gov

Consortium of Lichen... lichenportal.org

File:Parmelia sulcata... commons.wikimedia.org

Parmelia serrana-new to... www.researchgate.net

Parmelia sulcata - Common... lichens.twinferntech.net

Parmelia submontana fungi.myspecies.info

lichen-Parmelia squarrosa –... ohiomosslichen.org

Parmelia sulcata – 10,000... 10000thingsofthepnw.com

shield lichens (Genus... www.inaturalist.org