| Name | Massalongia microphylliza (Nylander ex Hasse) Henssen |
| Authorship | (Nylander ex Hasse) Henssen |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Massalongia Körber |
| Citation | 1963 Canad. J. Bot. 41: 1340 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Massalongia microphylliza (Nylander ex Hasse) Henssen |
| Identification made in | [no date] (8), 1962 (1) |