Question: Which genus can be found on the most continents, Hechtia or Zantedeschia?
Sentence (from "Zantedeschia"): Common names include arum lily for "Z. aethiopica" and calla and calla lily for "Z. elliottiana" and "Z. rehmannii", although members of the genus are neither true lilies of Liliaceae, true "Arums", or true "Callas" (related genera in Araceae).
Relevant evidence: No