| Name | Bryum knowltonii Barnes |
| Authorship | Barnes |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Bryum |
| Contains | Bryum knowltonii var. ammophilum (R. Ruthe) Wijk & Margadant |
| Citation | 1889 Bot. Gaz. 14: 44 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Bryum knowltonii Barnes |
| Identification made in | [no date] (9) |
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