| Name | Thesidium fragile Sonder |
| Authorship | Sonder |
| Rank | Species |
| Placed in | Thesidium |
| Citation | 1857 Flora 40: 364 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Thesidium fragile Sonder |
| Identification made in | [no date] (3) |
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