| Name | Arthonia dispersa var. tetramera Stizenberger |
| Authorship | Stizenberger |
| Rank | Variety |
| Placed in | Arthonia dispersa (Schrader) Nylander |
| Citation | 1903 Bull. S. Calif. Acad. Sci. 2: 35 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Arthonia dispersa var. tetramera Stizenberger |
| Identification made in | [no date] (2) |
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