[From Peter Schneider on Roses, by Peter Schneider, p. 138:] The kordesii climbing shrubs originated by Wilhelm Kordes in the 1950s are noted for their shiny foliage, disease resistance and winter hardiness... Because the kordesiis are classified with the shrubs, that is where kordesii specimens must be exhibited in rose shows conducted under the rules of the American Rose Society. Please refer to this book for more information about exhibiting them.