| Name | Gymnoconia riddelliae Griffiths |
| Authorship | Griffiths |
| Rank | Species |
| Placed in | Gymnoconia |
| Citation | 1902 Bull. Torrey Bot. Club 29: 296 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gymnoconia riddelliae Griffiths |
| Identification made in | [no date] (1) |