Three new Opegrapha species... bioone.org

Three new Opegrapha species... bioone.org

Opegrapha - Wikispecies species.wikimedia.org

Opegrapha - Wikipedia en.wikipedia.org

Opegrapha www.mindat.org

Opegrapha Ach., 1809 www.gbif.org

Consortium of Lichen... lichenportal.org

PDF) A new corticolous... www.researchgate.net

Revision of the corticolous... www.schweizerbart.de

Opegrapha Ach., 1809 www.gbif.org

PDF) Three new Opegrapha... www.researchgate.net

PDF) A new corticolous... www.researchgate.net

Three new Opegrapha species... bioone.org

PDF) Two species of... www.researchgate.net

PDF) Three new Opegrapha... www.researchgate.net

Opegrapha Ach., 1809 www.gbif.org

PDF) Two New Records of the... www.researchgate.net

Twenty-five lichen species... www.zobodat.at

Consortium of Lichen... lichenportal.org

Opegrapha Ach., 1809 www.gbif.org