Ref ID | Type | Author | Date | Title |
28080
| Database | Environmental Assessment Program. | 2018 | |
27950
| Database | Michigan State University Board of Trustees. | 2019 | Midwest Invasive Species Information Network (MISIN) |
31186
| Database | Reznicek, AA, E.g., Voss, and B.S. Walters. | 2011 | Michigan Flora Online |
25944
| Database | Ueda, K., J. Belmonte, A. Shepard, P. Leary, and S. Loarie. | 2021 | iNaturalist.org |