Nom:		Rhizocarpon concentricum var. excentricum Syd., Die Flecht. Deutschl. (1887) page 199
Basionyme:		Lecidea petraea var. excentrica Ach.
Condition:		Variété, lichen
Position taxonomique:		Rhizocarpon concentricum (Davies) Beltr. [Espèce] Rhizocarpon Ramond ex DC. [Genre] Rhizocarpaceae M. Choisy ex Hafellner [Famille] Rhizocarpales Miądl. et al. [Ordre] Lecanoromycetidae P.M. Kirk, P.F. Cannon, J.C. David & Stalpers ex Miądl., Lutzoni & Lumbsch [Sous-classe] Lecanoromycetes O.E. Erikss. & Winka [Classe] Pezizomycotina O.E. Erikss. & Winka [Sous-embranchement / Sous-phylum] Ascomycota Caval.-Sm. [Embranchement / Phylum] Fungi R.T. Moore [Royaume]
L'Information des catalogues:		Zahlbruckner, Catalogus Universalis Lichenum 4: 358
Cybertruffle Resources:		Cyberliber Cumulative Index [English language only]
Liens:		Fungal Databases [Systematic Botany and Mycology, USDA] Genbank Google images IMI [CABI Fungus Dried Reference Collection] Index Fungorum Landcare [New Zealand] Mycobank New York Botanic Garden [Virtual Fungus Dried Reference Collection]