| Name | Himantocladium nanum R. S. Williams |
| Authorship | R. S. Williams |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Himantocladium |
| Citation | 1914 Bull. New York Bot. Gard. 8(31): 359 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Himantocladium nanum R. S. Williams |
| Identification made in | [no date] (1) |