| Name | Hapalosiphon pumilus Kirchner ex Bornet & Flahault |
| Authorship | Kirchner ex Bornet & Flahault |
| Rank | Species |
| Placed in | Hapalosiphon Nägeli ex Bornet & Flahault |
| Citation | 1887 Ann. Sci. Nat., Bot. ser. 7, 5: 61 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Hapalosiphon pumilus Kirchner ex Bornet & Flahault |
| Identification made in | 1938 (1) |