| Classification | Asteraceae: Senecio |
| Classification 1 | Asteraceae: Packera |
| Classification 2 | Asteraceae: Senecio |
| Harvard University Herbaria Barcode(s) | 00026305 |
| Type Status | Isotype |
| Collector | A. Nelson |
| Collector number | 858 |
| Country | United States of America |
| State | Wyoming |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Wyoming: Fremont County |
| Locality | Union Pass, Wind River Range |
| Date Collected | 1894-08-10 |
| Container | Flora of Wyoming |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/5f595faf-3030-4b30-843a-c1ad8511df53 |
| Harvard University Herbaria Barcode | 00026305 |
| Herbarium | GH |
| Previous ownership | [Ex] Herb. University of Wyoming |
| Family | Asteraceae |
| Determination | Senecio acutidens Rydberg |
| Determined by | Greenman, Jesse More |
| Family | Asteraceae |
| Determination | Senecio aureus var. croceus A. Gray |
| Determination Remarks | [is label name] |
| Family | Asteraceae |
| Determination | Senecio tridenticulatus Rydberg |
| Determined by | Barkley, Theodore Mitchell |
| Date Determined | 1960 |
| Family | Asteraceae |
| Determination | Senecio tridenticulatus Rydberg |
| Determined by | Barkley, Theodore Mitchell |
| Date Determined | 1974 |
| Family | Asteraceae |
| Determination | Packera tridenticulata (Rydberg) W. A. Weber & Á. Löve |
| Determined by | Trock, Debra Kay |
| Date Determined | 2019-02-** |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Type Status | Isotype |
| Isotype of | Senecio acutidens Rydberg |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Senecio acutidens Rydberg) Bull. Torrey Bot. Club 1900. 27: 180. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
