| Name | Lemanea fucina f. subtilis (C. Agardh) Rabenhorst |
| Authorship | (C. Agardh) Rabenhorst |
| Rank | Forma |
| Placed in | Lemanea fucina Bory |
| Remarks | Basionym cited as: Lemanea fluviatilis var. subtilis C. Agardh (an error for L. subtilis) |
| Citation | 1868 [May-Jun 1868] Fl. Eur. Alg. 3(2): 412 |