| Name | Juncus bufonius var. congestus Wahlenberg |
| Authorship | Wahlenberg |
| Rank | Variety |
| Placed in | Juncus bufonius Linnaeus |
| Citation | 1820 Fl. Gothob. 38 |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Juncus bufonius var. congestus Wahlenberg |
| Identification made in | [no date] (11) |
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