| Name | Gymnosporangium nelsonii Arthur |
| Authorship | Arthur |
| Rank | Species |
| Placed in | Gymnosporangium |
| Citation | 1901 Bull. Torrey Bot. Club 28: 665 |
| Holdings | 48 Specimens held in the Harvard University Herbaria identified as Gymnosporangium nelsonii Arthur |
| Identification made in | [no date] (44), 1939 (1), 1981 (3) |