plants having vascular tissue and reproducing by spores

chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots

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

primitive evergreen moss-like plant with spores in club-shaped strobiles

any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia