Jasmine or Jessamine (Jasminum) (from Persian yasmin, i.e. "gift from God"[4][5], via Arabic[6]) is a genus of shrubs and vines in the olive family (Oleaceae),with about 200 species, native to tropical and warm temperate regions of the Old World. The majority of species grow as climbers on other plants or on structures such as chicken wire, gates or fences. The leaves can be either evergreen (green all year round) or deciduous (falling leaves in autumn), and are opposite in most species; leaf shape is simple, trifoliate or pinnate with up to nine leaflets. Jasmine tea is also tradtionally said to help against coughs, sore throats or other problems to do with the bronchites, although there is no scientific evidence to support this.