Iris westii is a species in the genus Iris, it is also in the subgenus of Iris and in the Oncocyclus section. It is from the mountain sides of Lebanon. It has curved grey-green leaves, a stem carrying one flower in shades of lilac, white or beige with spotting or veins in a darker shade or violet. The lower petals have deep velvety chocolate or deep violet-black signal patch and a purple beard. It rare and threatened due to habitat destruction, from military actions, overgrazing by goats and other factors.