Plane-tree, in botany, a genus of the monocotyledon polyandra clas. The calyx both of the male and female is a roundish amentum; the male has no corolla; the corolla of the female consists of many petals; the stigma is bent backward; and the seeds are round.

The species are two, none of them natives of Britain.

Platiband, in gardening, a border or bed of flowers along a wall, or the side of a parterre frequently edged with box, &c.

Platiband of a door or window is used for the lintel, where that is made square or not much arched.