| Classification | Athyriaceae: Cystopteris |
| Harvard University Herbaria Barcode(s) | 00020946 |
| Type Status | Type, Holotype |
| Collector | J. J. Davis |
| Country | United States of America |
| State | Missouri |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Missouri |
| Locality | La Grange |
| Date Collected | 1911-09-14 |
| Habitat | Woods |
| Container | Plants of Missouri |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/f3805deb-73dc-48f3-aa0a-e87ef0cbc4f7 |
| Harvard University Herbaria Barcode | 00020946 |
| Herbarium | GH |
| Family | Athyriaceae |
| Type Status | Type |
| Type of | Cystopteris fragilis f. simulans Weatherby |
| Annotation Text | [written in pen on sheet] |
| Taxon Reference | (for Cystopteris fragilis f. simulans Weatherby) Rhodora 1935. 37: 376. |
| Family | Athyriaceae |
| Type Status | Holotype |
| Holotype of | Cystopteris fragilis f. simulans Weatherby |
| Date Determined | 2025-06-09 |
| Determination Remarks | [filed under] [current name] |
| Taxon Reference | (for Cystopteris fragilis f. simulans Weatherby) Rhodora 1935. 37: 376. |
| Family | Athyriaceae |
| Determination | Cystopteris ×tennesseensis Shaver |
| Determined by | Windham, Michael Dennis |
| Date Determined | 2022-07-** |
| Annotation Text | Duke Univeristy Herbarium, subsp. tennesseensis |
| Family | Athyriaceae |
| Determination | Cystopteris ×tennesseensis Shaver |
| Determined by | Haufler, Christopher H. |
| Date Determined | 1991-02-** |
| Annotation Text | "Cystopteris tennesseensis"; Biosystematics of North American Cystopteris, McGregor Herbarium, University of Kansas (KANU) |
| Family | Athyriaceae |
| Determination | Cystopteris ×tennesseensis Shaver |
| Determined by | Blasdell, Robert Ferris |
| Date Determined | 1959-08-** |
| Annotation Text | University of Michigan |
| Family | Athyriaceae |
| Determination | Cystopteris fragilis var. simulans (Weatherby) McGregor |
| Determined by | McGregor, Ronald Leighton |
| Date Determined | 1949-12-** |
| Family | Athyriaceae |
| Determination | Cystopteris fragilis (Linnaeus) Bernhardi |
| Determined by | Weatherby, Charles Alfred |
| Date Determined | 1920 |
| Annotation Text | this is probably the "forma memorabilis" mentioned by Milde Fil. Eur. [page] 154 as hairy [? form or fern] collected by Engelmann in Missouri [Filices Europae et Atlantidis, Asia Minoris et Siberiae, auctore Dr. J. Milde: "formam memorabilem"] |
| Family | Athyriaceae |
| Determination | Cystopteris fragilis (Linnaeus) Bernhardi |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
