| Name | Equisetum ramosissimum subsp. debile (Roxburgh ex Vaucher) Hauke |
| Authorship | (Roxburgh ex Vaucher) Hauke |
| Rank | Subspecies |
| Placed in | Equisetum ramosissimum Desfontaines |
| Citation | 1962 Amer. Fern J. 52(1): 33 |
| Holdings | 70 Specimens held in the Harvard University Herbaria identified as Equisetum ramosissimum subsp. debile (Roxburgh ex Vaucher) Hauke |
| Identification made in | [no date] (19), 1993 (48), 1997 (1), 1999 (2) |