in botany, a genus belonging to the diandria gymnospermia clas. The calyx consists of five segments; and each pair of antherae are disposed in the form of a cross. There are three species, two of which are natives of Britain, viz., the hederacea, or ground-ivy; and the arvensis, or upright ground-ivy. The leaves of the hederacea are corrosive, aperient, and detergent.

GLEITSIA, in botany, a genus of the polygamia dicoccia clas. The calyx of the hermaphrodite has four segments; the corolla four petals; there are six stamens, and one pistillum. The calyx of the male consists of three leaves, and the corolla of three petals; and it has six stamens. The calyx of the female consists of five leaves, and the corolla of five petals; it has but one pistillum; and the capsule is a legumen. There are two species, none of them natives of Britain.