| Classification | Asteraceae: Senecio |
| Classification 1 | Asteraceae: Packera |
| Harvard University Herbaria Barcode(s) | 00112947 |
| Collector | E. Hall & J. P. Harbour |
| Collector number | 333 [in part] |
| Country | United States of America |
| State | Colorado |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Colorado |
| Locality | [no additional data] |
| Date Collected | 1862 |
| Container | Rocky Mountain Flora. Lat. 39°-41°. |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/27974f1e-0744-4fda-9ab7-2770ef3e0615 |
| Harvard University Herbaria Barcode | 00112947 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Senecio tridenticulatus Rydberg |
| Determined by | Greenman, Jesse More |
| Annotation Text | no. 333 in part |
| Family | Asteraceae |
| Determination | Senecio fendleri var. molestus Greenman |
| Annotation Text | Isotype [not a type, Greenman considered this specimen to be a different species from his S. fendleri var. molestus] |
| Family | Asteraceae |
| Determination | Senecio tridenticulatus Rydberg |
| Determined by | Barkley, Theodore Mitchell |
| Date Determined | 1960 |
| Family | Asteraceae |
| Determination | Packera tridenticulata (Rydberg) W. A. Weber & Á. Löve |
| Determined by | Trock, Debra Kay |
| Date Determined | 2019-03-** |
| Determination Remarks | [is Current name] |
| Sex | not determined |
| Phenology | Fruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Description | [originally mounted with Hall & Harbor 333 in part = Packera fendleri] |
