horsetail equisetum, genus of vascular plants, department equisetophyta ferns. horsetail sways in the wind. metamerism

horsetail equisetum hyemalethe wind blowing equisetophyta medicinal plant environment palustre growth equisetopsida fluctuation fluctuate sylvaticum swamp flutter herb macro summer flora sway beautiful botany green forest herbaceous equisetaceae hippochaete hyemalis nature marsh bog