Opegrapha atra var. calcarea (Turner ex Sm.) Stizenb.
- Dataset
- GBIF Backbone Taxonomy
- Rank
- VARIETY
- Published in
- (1865). Flora, Regensburg 48: 73.
Classification
- kingdom
- Fungi
- phylum
- Ascomycota
- class
- Arthoniomycetes
- order
- Arthoniales
- family
- Arthoniaceae
- genus
- Arthonia
- species
- Arthonia calcarea