| Classification | Hypnaceae: Ptilium |
| Harvard University Herbaria Barcode(s) | 00920221 |
| Collector | W. A. Olson |
| Collector number | 632 |
| Country | United States of America |
| State | Minnesota |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Minnesota: Roseau County (Minnesota) |
| Locality | [data not captured] |
| Date Collected | 1960-08-03 |
| Project | Lichen and Bryophyte TCN |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/7fc0ee6e-0503-4eae-830e-40825e59e1f2 |
| Harvard University Herbaria Barcode | 00920221 |
| Herbarium | FH |
| Family | Hypnaceae |
| Determination | Ptilium crista-castrensis (Hedwig) De Notaris |
| Determination Remarks | [is filed under name] [is Current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
