| Classification | Asteraceae: Helianthus |
| Harvard University Herbaria Barcode(s) | 00263103 |
| Type Status | Syntype |
| Collector | E. Coues |
| Country | United States of America |
| Geography | North America: North America (CA, US, MX) (Region): United States of America |
| Locality | N. Boundary, Frenchman Creek to R. Mts [Rocky Mountains] |
| Date Collected | 1874 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/c7d7e071-101e-4405-8a7b-7b65ace0c871 |
| Harvard University Herbaria Barcode | 00263103 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Helianthus rydbergii Britton |
| Determined by | R. W. Long |
| Date Determined | 1959 |
| Family | Asteraceae |
| Determination | Helianthus nuttallii subsp. rydbergii (Britton) R. W. Long |
| Determination Remarks | [is Current name] |
| Family | Asteraceae |
| Determination | Helianthus tuberosus var. subcanescens A. Gray |
| Determined by | A. Gray |
| Determination Remarks | [A. Gray (scripsit)] [is Current name] |
| Annotation Text | prob ally Syn. Fl. N. Amer. |
| Family | Asteraceae |
| Type Status | Syntype |
| Syntype of | Helianthus tuberosus var. subcanescens A. Gray |
| Verified by | W. T. Kittredge |
| Date Determined | 2007 |
| Taxon Reference | (for Helianthus tuberosus var. subcanescens A. Gray) Syn. Fl. N. Amer. 1884. 1(2): 280. |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
