Iris is a late period line introduced by Roseville Pottery in 1939. Standard colors include blue, brown, and pink. The shapes are realistic with Art Deco features. Although there were 45 shapes advertised, the factory stock pages show only 43. Shapes include various bowls, vases, wall pockets, ewers, baskets, window boxes, jardinières, pedestals, cornucopias, etc. Iris is marked with the die-impressed Roseville script mark, shape number, and size. Blue is the most popular color in this collectible Roseville pattern.