| Classification | Dennstaedtiaceae: Pteridium |
| Harvard University Herbaria Barcode(s) | 00135468 |
| Type Status | Isotype |
| Collector | K. H. Mertens |
| Country | United States of America |
| State | Alaska |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Alaska |
| Locality | Sitcha [Sitka] |
| Date Collected | 1827 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/3e5205af-620e-4b43-a3b3-b0d99fdfbe3e |
| Harvard University Herbaria Barcode | 00135468 |
| Herbarium | GH |
| Family | Dennstaedtiaceae |
| Determination | Pteridium aquilinum var. pubescens Underwood |
| Determined by | R. M. Tryon |
| Determination Remarks | [is Current name] |
| Type Status | Isotype |
| Isotype of | Pteris aquilina var. lanuginosa Bongard |
| Taxon Reference | (for Pteris aquilina var. lanuginosa Bongard) Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 1832. 2: 176. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
