| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Zanthoxylum americanum f. impuniens Fassett | N. C. Fassett 21622 with J. W. Thomson Jr., 13 Sep 1938 | United States of America. Wisconsin. Juneau Co. Near the Wisconsin R., 3 mi. N of Wisconsin Dells. | isotype | 67190 |  |