| Name | Rhus radicans var. rydbergii (Small ex Rydberg) Rehder |
| Authorship | (Small ex Rydberg) Rehder |
| Rank | Variety |
| Placed in | Rhus radicans Linnaeus |
| Citation | 1939 J. Arnold Arbor. 20: 416 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Rhus radicans var. rydbergii (Small ex Rydberg) Rehder |
| Identification made in | [no date] (2) |