Iconic Arts & Crafts style art pottery in matte green glaze with a floral design to the rim, 9" dia x 3.25" h, with movable flower frog.  Good mold and color.  Bottom marked with Rookwood reverse RP logo, Roman numeral year mark XX and flame shape.  Wonderful , pleasing even green, in excellent overall condition, with so few pinhead glaze pops most would not even mention.  No chips, cracks, damage, or repair of any kind, ca 1920.