The Williamson-White Medal is the highest special medal awarded by the American Iris Society to miniature tall bearded (MTB) irises. The candidates are the MTBs that have received the Award of Merit in the previous three years. The winners of the medal are then among those eligible for the American Dykes Medal the following three years.
Here are the four candidate MTB irises on the 2015 ballot.
-- WayneMesser - 2015-01-28