| Name | Arthonia helvola Nylander |
| Authorship | Nylander |
| Rank | Species |
| Placed in | Arthonia Acharius |
| Citation | 1867 Flora 50: 330 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Arthonia helvola Nylander |
| Identification made in | [no date] (2) |
Copyright © 2013 The President and Fellows of Harvard College | Accessibility