| Ref ID | Type | Author | Date | Title |
|
18333
| Journal Article | Lakela, O. | 1941 | Sparganium glomeratum in Minnesota. |
|
23892
| Journal Article | Lewis, H.F. | 1931 | An annotated list of vascular plants collected on the north shore of the Gulf of St. Lawrence 1927-1930. |
|
703
| Journal Article | Mills, E.L., J.H. Leach, J.T. Carlton, and C.L. Secor | 1993 | Exotic species in the Great Lakes: a history of biotic crises and anthropogenic introductions |
|
28887
| Database | Minnaert-Grote, J. (manager). | 2015 | Illinois Natural History Survey Herbarium (ILLS) |
|
28331
| Database | SEINet Portal Network. | 2021 | Southwest Environmental Information Network |
|
35441
| Database | U-M Library Digital Collections. | 2021 | University of Michigan Herbarium Catalog Collection |
|
17521
| Database | USDA, NRCS. | 2016 | The PLANTS Database |
