| Classification | Adiantaceae: Pityrogramma |
| Classification 1 | Adiantaceae: Pentagramma |
| Harvard University Herbaria Barcode(s) | 00106952 |
| Type Status | Isotype |
| Collector | J. C. Blumer |
| Collector number | 3271 |
| Country | United States of America |
| State | Arizona |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona |
| Locality | Head of Rincon Valley, 3600 feet |
| Date Collected | 1909-07-27 |
| Elevation | 1097 m |
| Habitat | Dripping rocks |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/311890be-f5e9-4c48-ae59-ecc8c988c37d |
| Harvard University Herbaria Barcode | 00106952 |
| Herbarium | GH |
| Family | Adiantaceae |
| Type Status | Isotype |
| Isotype of | Pityrogramma triangularis var. maxoni Weatherby |
| Verified by | W. T. Kittredge |
| Date Determined | 2009 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Pityrogramma triangularis var. maxoni Weatherby) Rhodora 1920. 22: 119. |
| Family | Adiantaceae |
| Determination | Pentagramma maxonii (Weatherby) Schuettp. & Windham |
| Determined by | Windham, Michael Dennis |
| Date Determined | 2016-03-** |
| Determination Remarks | [current name] |
| Family | Adiantaceae |
| Determination | Pentagramma triangularis subsp. maxonii (Weatherby) Yatskievych, Windham & E. Wollenweber |
| Determined by | W. T. Kittredge |
| Date Determined | 2009 |
| Family | Adiantaceae |
| Determination | Pityrogramma triangularis var. maxoni Weatherby |
| Determined by | C. A. Weatherby |
| Date Determined | 1919 |
| Annotation Text | C.A.W. duplicat type |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
