| Name | Pucciniastrum hydrangeae (Magnus) Arthur |
| Authorship | (Magnus) Arthur |
| Rank | Species |
| Placed in | Pucciniastrum |
| Remarks | Résult. Sci. Congr. Bot. Wien 1905: 337 (1906) |
| Holdings | 18 Specimens held in the Harvard University Herbaria identified as Pucciniastrum hydrangeae (Magnus) Arthur |
| Identification made in | [no date] (18) |