in botany; a genus of plants of the class di- cots, order tetrandria, and in the natural system arranged under the 48th order, aggregate. The male calyx is quadrupartite; the antherae adhere to the calyx; the female calyx consists of four leaves; there is no style; the stigma is obtuse. There is no corolla; the fruit is a berry with one seed. There are 9 species; only one of which is a native of Britain, viz. the album, or common mistletoe. It is a shrub growing on the bark of several trees; the leaves are conjugate and elliptical, the flowers forked; the flowers whitish in the axil of the leaves. This plant was reckoned sacred among the Druids.