| Name | Epilobium clavatum Trelease |
| Authorship | Trelease |
| Rank | Species |
| Placed in | Epilobium Linnaeus |
| Citation | 1891 Rep. (Annual) Missouri Bot. Gard. 2: 111, pl. 48 |
| Holdings | 77 Specimens held in the Harvard University Herbaria identified as Epilobium clavatum Trelease |
| Identification made in | [no date] (60), 1960 (1), 1978 (2), 1979 (9), 1981 (3), 1987 (1), 1995 (1) |