| Literature | Misapplied as Racomitrium aquaticum Christy and Wagner 1996. See Bednarek-Ochyra 2000. |
| Illustrations | Bednarek-Ochyra 2000. Misapplied as Racomitrium aquaticum Lawton 1971; Wagner 1998. |
| Notes | Although this species is currently not documented for California, Racomitrium ryszardii should be looked for in the headwaters of the Applegate and Rogue River watersheds in California. Known from WA but not yet known from OR or CA. |
| Vouchers | OREGON: Multnomah Co.: Cascade Range west of Mt. Hood, Rambo s.n. (UC) [determined by Bednarek-Ochyra]. |
·