... seven specific categories: Irregular Upper and Lower Border, Favrile, Geometric,Transition to Flowers, Flowered Cone, and Flowered Globe lamps. The Irregular ... Lower Border lamps carry an openwork crown edge that helps to simulate a branch, tree, or shrubbery. The Favrile category, ... these patterns for these lamps. Next is the Transition to Flowers group, which is subdivided into the Flowered Cone ...