| Name | Alopecurus geniculatus f. robustior Hackel ex Kneucker |
| Authorship | Hackel ex Kneucker |
| Rank | Forma |
| NomenclaturalStatus | NomLeg |
| Placed in | Alopecurus geniculatus Linnaeus |
| Citation | 1905 Allg. Bot. Z. Syst. 11: 54 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Alopecurus geniculatus f. robustior Hackel ex Kneucker |
| Identification made in | [no date] (1) |