Category:en:Horsetails

English terms for types or instances of horsetails, calamites, and other plants in the taxon known as the subclass Equisetidae or either the class Equisetopsida or the class Sphenopsida, depending on the classification system used.

NOTE: This is a set category. It should contain terms for horsetails, not merely terms related to horsetails. It may contain more general terms (e.g. types of horsetails) or more specific terms (e.g. names of specific horsetails), although there may be related categories specifically for these types of terms.