| Name | Orthotrichum lyellii var. howei Renauld & Cardot |
| Authorship | Renauld & Cardot |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Orthotrichum lyellii Hooker & Taylor |
| Citation | 1900 Bot. Gaz. 30: 20 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Orthotrichum lyellii var. howei Renauld & Cardot |
| Identification made in | [no date] (1) |