| Name | Gymnosporangium harknessianum Kern ex Arthur |
| Authorship | Kern ex Arthur |
| Rank | Species |
| Placed in | Gymnosporangium |
| Citation | 1926 N. Amer. Fl. 7 911): 737 |
| Holdings | 8 Specimens held in the Harvard University Herbaria identified as Gymnosporangium harknessianum Kern ex Arthur |
| Identification made in | [no date] (8) |
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