| Name | Gomphus clavatus (Persoon) Gray: Fries |
| Authorship | (Persoon) Gray: Fries |
| Rank | Species |
| Placed in | Gomphus |
| Citation | 1821 Nat. Arr. Brit. Pl. 1: 638 |
| Holdings | 13 Specimens held in the Harvard University Herbaria identified as Gomphus clavatus (Persoon) Gray: Fries |
| Identification made in | [no date] (13) |