White flowers; VII–X, with very dark sepals; mid-green foliage; height 31–45cm; spread 46–60cm.
Wild-collected sport; found on a plant near Broadstone, Dorset, England, by D. F. Maxwell in 1927; introduced by Maxwell & Beale (Broadstone) in 1929.
Name is nn allusion to the ebony (black) and white combination in the flowers.
