equisetum sylvaticum

Equisetum sylvaticum, the wood horsetail, is a horsetail (family Equisetaceae) native to the Northern Hemisphere, occurring in North America and Eurasia. Because of its lacy appearance, it is considered among the most attractive of the horsetails.

This perennial horsetail has erect, hollow stems that grow from 30 to 60 cm in length and from 1–4 mm thick. The branches themselves are compound and delicate, occurring in whorls and drooping downward. There are generally 12 or more branches per whorl. ...