| Name | Heterocladium macounii Best |
| Authorship | Best |
| Rank | Species |
| Placed in | Heterocladium |
| Citation | 1901 Bull. Torrey Bot. Club 28(2): 127–128, pl. 14, f. 1–19. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Heterocladium macounii Best |
| Identification made in | [no date] (1) |