An order of flowering plants, division Magnoliophyta (Angiospermae), in the subclass Commelinidae of the class Liliopsida (monocotyledons). The order consists of 4 families and about 450 species, some 400 of them belonging to the Restionaceae. The vast majority of the species grow in temperate regions of the Southern Hemisphere. The Restionales are wind- or self-pollinated, with reduced flowers and a single, pendulous, orthotropous ovule in each of the 1–3 locules of the ovary. The Restionaceae are much like the Gramineae in the related order Cyperales and are sometimes referred to as Southern Hemisphere grasses.