Dear all; I noticed these topics recently and was slightly put off by their inaccuracy and I don't think any one noted that neither Callas (Genus Zantedeschia) or Arum (Genus Zantedeschia) are actually lilies. Both of these common names refer to plants NOT in the lily family or closely related. The names Arum and Calla actually refer to genera by those name and not the Genus under discussion. The common names can refer to other plants, too. The genus Calla is a small genus of northern marshy aroids, while the genus Arum is larger in number of species and distribution. Neither overlaps with Zantedeschia. Likewise 'Canna Lilies' are not true lilies, but more correctly called just 'Canna'. Just as peony roses are not roses. If this list is to have educational value these crucial differences should be made clear. So this note is not a chastisement, but for clarity and better understanding of where these things all fit into a bigger picture. We have often grumbled about the peculiar nature of common names especially regional ones. Hope this helps. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +