Horsetail 'Equisetum'
 Horsetails are native on all continents except Australasia and Antarctica. They mostly grow 0.2-1.5 m tall, though 'E. telmateia' can exceptionally reach 2.5 m, and the tropical American species 'E. giganteum' 5 m, and 'E. myriochaetum' 8 m.