Question: Which genus of plant, Drosanthemum or Hyacinthella, is native to eastern and south-eastern Europe through to northern Iran, reaching as far south as Palestine?
Sentence (from "Buxus sempervirens"): Buxus colchica" of western Caucasus and "B. hyrcana" of northern Iran and eastern Caucasus are commonly treated as synonyms of "B. sempervirens".
Relevant evidence: No