InGen Database Description
Horsetails (scientific name Equisetum) are the only remaining genus of the class Equisetopsida. A 'living fossil', horsetails are a genetic link back in time to the Cretaceous Period, perhaps even the Triassic, when Equisetopsida would have been much more plentiful and diverse. Calamites, a close relative of horsetails, could have grown to be up to 30m tall.
Horsetails are commonly seen as an invasive species and a weed, but have a long history of use in traditional medicine. The abrasive stems can be used for scouring pans, and in Japan, are boiled and dried before being used to polish woodcraft.