giant horsetail

Equisetum telmateia is a member of the Equisetaceae family and is commonly referred to as giant horsetail. It is native to regions including Europe, western Asia, and northwest Africa. The species was historically grouped more broadly, incorporating a subspecies found in western North America. However, this subspecies is now classified as a distinct species, Equisetum braunii. The species was first described in 1783 and is found in various regions such as the Açores, Madeira, Portugal Continental, and other islands in the area, as well as parts of northern Europe and globally.