Flora of North America North of Mexico. Vol. 3. Magnoliophyta: Magnoliidae and Hamamelidae: Magnoliales (Magnolia Order), Laurales (Laurel Order), Piperales (Pepper Order), Aristolochiales (Birthwort Order), Illiciales (Star-Anise Order), Nymphaeales (Water-Lily Order), Ranunculales (Buttercup Order), Papaverales (Poppy Order), Hamamelidales (Witch-Hazel Order), Urticales (Nettle Order), Leitneriales (Corkwood Order), Juglandales (Walnut Order), Myricales (Bayberry Order), Fagales (Beech Order), Casuarinales (She-Oak Order)by Flora of North America Editorial Committee