| Name | Gymnosporangium exterum J. C. Arthur & F. D. Kern |
| Authorship | J. C. Arthur & F. D. Kern |
| Rank | Species |
| Placed in | Gymnosporangium |
| Citation | 1910 Mycologia 1 (6): 254 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Gymnosporangium exterum J. C. Arthur & F. D. Kern |
| Identification made in | [no date] (3) |
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