horsetail equisetum healing plant bunch background. equisetum arvense or snake grass is a medicinal plant

arvense background biodynamic botany clay common diploid equisetaceae equisetum equisetumarvense field forest fossil grass green greengrass herb herbaceous horsetail invasive landscape laurisilva levada living madeira medicinal moist napier natural nature outdoor perennial plant ponta puzzlegrass reed rocks segments snake soil sol spore spring stems stream summer texture tolkachik vegetable water