| Name | Hymenophyllum thuidium Harrington |
| Authorship | Harrington |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Hymenophyllum Smith |
| GUID | urn:lsid:ipni.org:names:17125580-1 |
| Citation | 1877 J. Linn. Soc., Bot. 16: 25 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Hymenophyllum thuidium Harrington |
| Identification made in | [no date] (4), 1999 (1) |