| Name | Hieracium rigorosum (Laestadius ex Lange) Almquist ex Omang |
| Authorship | (Laestadius ex Lange) Almquist ex Omang |
| Rank | Species |
| Placed in | Hieracium Linnaeus |
| Citation | 1933 Skr. Svalbard Nordishavet 55: 11 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Hieracium rigorosum (Laestadius ex Lange) Almquist ex Omang |
| Identification made in | [no date] (3) |
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