The seeds of the Equisetum palustre appear to be alive by their twisting motion, when viewed through the microscope; but that is not animal life.
MacGillivray, William, Lives of Eminent Zoologists, from A...(2010)
n scouring-rush horsetail widely distributed in wet or boggy areas of northern hemisphere
Syn|Hyper
marsh horsetail
horsetail
perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in northern hemisphere; some in Africa and South America