swamp horsetail: Eurasia; northern North America to Virginia
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
nestorianism: the theological doctrine (named after Nestorius) that Christ is both the son of God and the man Jesus (which is opposed to Roman Catholic doctrine that Christ is fully God)