| Name | Jungermannia gracillima Smith |
| Authorship | Smith |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Jungermannia Linnaeus |
| Citation | 1811 Engl. Bot. [Smith & Sowerby] 32: 2238 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Jungermannia gracillima Smith |
| Identification made in | [no date] (1), 1969 (1) |