Equisetum
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Equisetum is the only living genus in Equisetaceae, a family of vascular plants that reproduce by spores rather than seeds. The oldest remains of modern Equisetum species first appear in the Early Jur
Equisetum telmateia, Ireland 1 Ragnhild & Neil Crawford
Equisetum arvense (field horsetail)
Vegetative stem: B = branch in whorl I = internode L = leaves N = node
Strobilus of E. braunii on an unbranched stem
Hippuris
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Hippuris, the mare's tail, was previously the sole genus in the family Hippuridaceae. Following genetic research by the Angiosperm Phylogeny Group, it has now been transferred to the family Plantagina
Equisetum
…countries, these plants are known as cola de caballo ('horsetail'). A superficially similar but entirely unrelated flowering plant genus, mare's tail (Hippuris), is occasionally referred to as "horsetail", and adding to confusion, the name "mare's tail" is sometimes applied to Equisetum. List of plants poisonous…
Illustration Hippuris vulgaris 0