| Name | Orthotrichum lyellii Hooker & Taylor |
| Authorship | Hooker & Taylor |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Orthotrichum |
| Contains | Orthotrichum lyellii var. howei Renauld & Cardot Orthotrichum lyellii var. papillosum (Hampe) Sullivant & Lesquereux Orthotrichum lyellii f. pringlei (Müller Halle) Grout |
| Holdings | 99 Specimens held in the Harvard University Herbaria identified as Orthotrichum lyellii Hooker & Taylor |
| Identification made in | [no date] (98), 2019 (1) |