| Name | Leptodendriscum Vainio |
| Authorship | Vainio |
| Rank | Genus |
| Placed in | Massalongiaceae Wedin, P. M. Jørgensen & E. Wiklund |
| Contains | Leptodendriscum delicatulum Vainio Leptodendriscum sp. |
| Remarks | Type Species: L. delicatulum Vainio |
| Citation | 1890 Acta Soc. Fauna Fl. Fenn. 7(1): 220 |