| Classification | Hypnaceae: Isopterygium |
| Classification 1 | Plagiotheciaceae: Plagiothecium |
| Harvard University Herbaria Barcode(s) | 00220139 |
| Type Status | Isotype |
| Collector | A. J. Grout |
| Collector number | 196 |
| Country | United States of America |
| State | New York |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: New York: Nassau County: Hempstead |
| Locality | Long Island |
| Date Collected | 1899-12-01 |
| Habitat | Depression in base of old chestnut tree |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f53a6430-0047-41bb-9695-2fe55968e0ce |
| Harvard University Herbaria Barcode | 00220139 |
| Herbarium | FH |
| Family | Hypnaceae |
| Determination | Isopterygium tenerum (Swartz) Mitten |
| Determined by | R. R. Ireland |
| Date Determined | 1985 |
| Determination Remarks | [is Current name] |
| Family | Plagiotheciaceae |
| Type Status | Isotype |
| Isotype of | Plagiothecium groutii Cardot & Thériot |
| Verified by | R. R. Ireland |
| Date Determined | 1985 |
| Taxon Reference | (for Plagiothecium groutii Cardot & Thériot) Bot. Gaz. 1904. 37:379. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Packet |
| Preparation Method | Dried |
| Item Remarks | Sporophyte present |
