On the map in 2 countries shrub
Henna
Lawsonia inermis
Family: Lythraceae
On our map this plant appears in 2 countries and ranks highest in: United Arab Emirates, Sudan.
A densely branched shrub or small tree of the loosestrife family, growing to 2–6 m, with small, elliptical leaves and panicles of tiny, strongly scented flowers – white, cream or pinkish. The leaves contain a red-orange dye, lawsone, which binds permanently to the keratin of skin, hair and nails. The leaves are dried and ground into a green powder which, mixed with water or lemon juice, becomes a staining paste. The shrub copes well with heat, drought and slightly saline soil.
Description from: United Arab Emirates.
More: Wikipedia (en) Wikipedia (pl) Plants of the World Online (Kew)