Equisetum | Mespilus germanica | ''R. germanica'' subimago on ''Equisetum hyemale | Equisetum myriochaetum | Equisetum hyemale | Equisetum giganteum | Equisetum arvense |
Boiled and dried, the rough horsetail is used in Japan as a traditional polishing material, finer than sandpaper.