| Name | Ephemerum crassinervium (Schwägrichen) Hampe |
| Authorship | (Schwägrichen) Hampe |
| Rank | Species |
| Placed in | Ephemerum |
| Citation | 1837 Bot. Zeitung (Regensburg) 20: 285 |
| Holdings | 24 Specimens held in the Harvard University Herbaria identified as Ephemerum crassinervium (Schwägrichen) Hampe |
| Identification made in | [no date] (24) |