We always called these rabbit onions but I know the official name of them is horse tails..
Flood plain of the lake.
Equisetum hyemale (Rough Horsetail or Scouringrush Horsetail) is a species of horsetail native to moist forests, forest edges an stream banks, swamps, fens throughout the Holarctic Kingdom. The rough bristles have been used to scour or clean pots, used as sandpaper, as well as to shape the reeds of reed instruments such as clarinets or saxophones.